Wednesday, 25 May 2016

ROMANTIC LOVE POEMS PART

ROMANTIC LOVE POEMS PART

Romantic Love Poems

Love wasn't put in your heart to stay.
Love isn't love till you give it away.

When I first saw you I was afarid to talk to you
When I first talked to you I was afraid to like you
When I first liked you I was afarid to love you
Now that I love you I'm afraid to lose you

Love is gentle
Love is kind
Love is when...
...two lives combine

If a kiss were a raindrop, I'd send you showers.

If hugs were a second, I'd send you hours.

If smiles were water, I'd send you the sea.

If love was a person, I'd send you me.


I'm not supposed to love you, I'm not supposed to care
I'm not supposed to live my life, wishing you were there
I'm not supposed to wonder where you are or what you do
I'm sorry I just can't help myself, I fell in love with you

I wrote your name in the sand but the waves washed it away
I wrote your name on my hand but I washed it the next day
I wrote your name on a paper but I accidentally threw it away
I wrote your name in my heart and forever it will stay

The day will come when you'll be mine
But I'll just wait till that time
If I have to wait forever, that's what I'll do
Cause I can't live my life without you

You are irreplaceable and irresistible.
Together we'll make this unbreakable.

Love is not a word to say
Love is not a game to play
Love doesn't start in April and finish in May
Love is yesterday, tomorrow and today

You are the sun in my day
You are the wind in my sky
You are the waves in my ocean
And you are the beat in my heart

The shortest word for me is "I"
The sweetest word for me is "love"
The only word for me is "you!"

If love was a rose
I would simply pick it for you
If it was a gift
I give it to you
If it was a perfume
I would buy it for you
But since love is a feeling
I'll like to share it with you

Tears may dry
Years may fly
But my love for you will never die

I loved you once
I love you still
Always have, always will

The more we're together, the more things we share
The more we find new ways to show that we care
More hopes come to mind now, more plans and dreams too
And all seem more likely to come true

Hommade Powdered Detergent

Powdered DetergentEdit

  1. Image titled Make Your Own Laundry Detergent Step 1
    1
    Gather supplies. This easy, inexpensive method for making powdered detergent requires just three ingredients:
    • A bar of castile soap. Choose either unscented or buy a bar with your favorite scent, like lavender or lemon.
    • A box of washing soda. This is also called sodium carbonate or sodium ash, and is available in grocery stores.
    • A box of borax. This is a naturally occurring mineral that comes in powdered form, and is also available in grocery stores.[1]
  2. Image titled Make Your Own Laundry Detergent Step 2
    2
    Finely grate the bar of soap. Stand it in a bowl and use a cheese grater to crate the entire bar. You can also put it in a food processor to grind it to a nice fine consistency. When you're finished, no large chunks should remain; you want it fine enough to mix with the other powders.
  3. Image titled Make Your Own Laundry Detergent Step 3
    3
    Mix two parts washing soda and two parts borax. Place them in a big bowl that you won't be using for food purposes, and mix them well with a spoon.
  4. Image titled Make Your Own Laundry Detergent Step 4
    4
    Add one part grated soap. If you used 3 cups of washing soda and 3 cups of borax, mix in 1 1/2 cups of grated soap - you get the picture!
  5. Image titled Make Your Own Laundry Detergent Step 5
    5
    Add baking soda or essential oil. This is an optional step that you can choose if you wish to personalize your detergent to meet your family's needs. Baking soda helps freshen clothes that have heavy smells that need to be removed, and essential oils add an extra scent that you might enjoy. A few drops will suffice.[2]
  6. Image titled Make Your Own Laundry Detergent Step 6
    6
    Store the detergent in a sealed plastic container with a measuring cup. If you tend to do extra large loads of laundry, plan on using 1/4 cup per load. For smaller loads, use 1/8 cup.
  7. source:wiki how

HOW TO WRITE A PROJECT PROPOSAL

HOW TO WRITE A PROJECT PROPOSAL

How to Write a Project Proposal

Almost any business engaged in providing goods or services will at some point have to reply to a Request for Proposal, or RFP. The biggest mistake in writing a proposal is to approach it as a fill-in-the-blank task. A project proposal is more a function for the marketing department than it is for the technical or managerial staff that will actually be engaged in the task after the proposal is accepted, as the purpose of the proposal is to convince a partner to hire your firm above the potentially dozens of others who are also submitting proposals with probably lower costs than you.
Due Diligence

The initial RFP will contain a lot of details and questions, and possibly some background on the company making the request. If the RFP is done right, it should give you just enough information to craft an adequate response; however, adequate won't win the bid. A generic response that does nothing more than answer the questions is not enough -- you need to dig deeper to answer the questions that weren't asked. Take time to understand more about the company, and do some research. If the requester is available, ask him meaningful questions, and ask for clarification if it is warranted. This will not only help you better understand the task at hand, but also to come up with a price quote that more accurately reflects the client's needs.

Know What the Client Really Needs

More often than not, clients don't really know exactly what they need, and their true pain points may not be reflected in the RFP. Take time before responding to understand the client's core business, the primary challenges of its competitors, and who that business's other suppliers and partners may be. Ask yourself what the driving force behind the request may be -- if you can solve a problem rather than just provide a piece of equipment, you will move to the head of the line. Anticipate what the customer wants today and what he is likely to want next year, and plan out different scenarios before writing your proposal.

Sell Yourself and Your Company

Most requests for proposals aren't just looking for the cheapest provider -- clients want someone who understands their pain and will solve all of their problems. Your job is to convince them that you are that person. When writing the proposal, don't just stop at making a list. Each bullet point or deliverable should include at least some minimal language as to how you are solving their problem, or how you are best and most uniquely positioned to help them.

A good sales tactic in making a proposal is to offer options. If you have taken the time to truly understand the client's needs, you can offer a range of solutions -- usually three is best, because people have a natural tendency to pick the middle one. This lets the client know you are flexible, and also capable of handling needs that may go beyond those requested in the RFP.

Proposal Components

Not all proposals are the same, although if you write many of them, you will find that it becomes possible to re-use much of the same language. Generally speaking, a proposal should begin with a personal cover letter, and then proceed with a summary of the project to ensure you and the client are on the same page. Include a section on overall strategy as well as a section on individual tactics and deliverables, and then include a section for overall costs broken down by deliverables.

The client may have specified a delivery date, but it is always a good idea to break that down into a more detailed timeline if there are multiple deliverables. The proposal should also include specific payment terms and a signature page. A paragraph or two at the end for an about us boilerplate also gives the client a little more information about your range of services and background.

INVENTIONS AND SCIENTIST NAMES

INVENTIONS AND SCIENTIST NAMES

Invention Scientist name

tuning fork conig
electrolysis weber
positive waves goldestean
cathode rays j.j thompson
proton rutherford
neutron chadwick
electron millicon
x-rays rontgen
nuclear fission rutherford
triode valve fleming
ionic bond g.n.louis
pH value john newland
atom bomb otto hahn
telescope galielo
telegraph f.b.morse
radium cury jairy
computer babbage
acid bace theory arrhenius

THOMAS EDISON LIFE STORY

THOMAS EDISON LIFE STORY

Thomas Edison

Thomas Edison

"Genius is one percent inspiration, ninety-nine percent perspiration."

Born Thomas Alva Edison
February 11, 1847
Milan, Ohio, U.S.
Died October 18, 1931 (aged 84)
West Orange, New Jersey, U.S.
Nationality American
Education self educated with visits to the Cooper Union[1]
Occupation Inventor, businessman
Religion Deist (previously Congregationalist)[2]
Spouse(s) Mary Stilwell (m. 1871–84)
Mina Miller (m. 1886–1931)
Children Marion Estelle Edison (1873–1965)
Thomas Alva Edison Jr. (1876–1935)
William Leslie Edison (1878–1937)
Madeleine Edison (1888–1979)
Charles Edison (1890–1969)
Theodore Miller Edison (1898–1992)
Parent(s) Samuel Ogden Edison, Jr. (1804–1896)
Nancy Matthews Elliott (1810–1871)
Relatives Lewis Miller (father-in-law)
Signature
Thomas Alva Edison Signature.svg

Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, practical electric light bulb. Dubbed "The Wizard of Menlo Park",[3] he was one of the first inventors to apply the principles of mass production and large-scale teamwork to the process of invention, and because of that, he is often credited with the creation of the first industrial research laboratory.[4]

Edison was a prolific inventor, holding 1,093 US patents in his name, as well as many patents in the United Kingdom, France, and Germany. More significant than the number of Edison's patents was the widespread impact of his inventions: electric light and power utilities, sound recording, and motion pictures all established major new industries world-wide. Edison's inventions contributed to mass communication and, in particular, telecommunications. These included a stock ticker, a mechanical vote recorder, a battery for an electric car, electrical power, recorded music and motion pictures.

His advanced work in these fields was an outgrowth of his early career as a telegraph operator. Edison developed a system of electric-power generation and distribution[5] to homes, businesses, and factories – a crucial development in the modern industrialized world. His first power station was on Pearl Street in Manhattan, New York.[5]

Contents

1 Early life
2 Telegrapher
3 Marriages and children
4 Beginning his career
5 Menlo Park
5.1 Carbon telephone transmitter
5.2 Electric light
6 Electric power distribution
6.1 War of currents
7 Other inventions and projects
7.1 Fluoroscopy
7.2 Telegraph improvements
7.3 Motion pictures
7.4 Mining
8 West Orange and Fort Myers (1886–1931)
9 Final years
10 Death
11 Views on politics, religion and metaphysics
12 Views on money
13 Awards
14 Tributes
14.1 Places and people named for Edison
14.2 Museums and memorials
14.3 Companies bearing Edison's name
14.4 Awards named in honor of Edison
14.5 Other items named after Edison
14.6 In popular culture
15 List of people who worked for Edison
16 See also
17 References
18 Bibliography
19 External links

Early life
Edison as a boy

Thomas Edison was born in Milan, Ohio, and grew up in Port Huron, Michigan. He was the seventh and last child of Samuel Ogden Edison, Jr. (1804–1896, born in Marshalltown, Nova Scotia, Canada) and Nancy Matthews Elliott (1810–1871, born in Chenango County, New York).[6] His father, the son of a Loyalist refugee, had to escape from Canada because he took part in the unsuccessful Mackenzie Rebellion of 1837.[7] His patrilineal family line was Dutch by way of New Jersey; the surname had originally been "Edeson."[8]

In school, the young Edison's mind often wandered, and his teacher, the Reverend Engle, was overheard calling him "addled". This ended Edison's three months of official schooling. Edison recalled later, "My mother was the making of me. She was so true, so sure of me; and I felt I had something to live for, someone I must not disappoint." His mother taught him at home.[9] Much of his education came from reading R.G. Parker's School of Natural Philosophy and The Cooper Union.[10]

Edison developed hearing problems at an early age. The cause of his deafness has been attributed to a bout of scarlet fever during childhood and recurring untreated middle-ear infections. Around the middle of his career, Edison attributed the hearing impairment to being struck on the ears by a train conductor when his chemical laboratory in a boxcar caught fire and he was thrown off the train in Smiths Creek, Michigan, along with his apparatus and chemicals. In his later years, he modified the story to say the injury occurred when the conductor, in helping him onto a moving train, lifted him by the ears.[11][12]

Edison's family moved to Port Huron, Michigan, after the railroad bypassed Milan in 1854 and business declined;[13] his life there was bittersweet. Edison sold candy and newspapers on trains running from Port Huron to Detroit, and sold vegetables to supplement his income. He also studied qualitative analysis, and conducted chemical experiments on the train until an accident prohibited further work of the kind.[14]

Edison obtained the exclusive right to sell newspapers on the road, and, with the aid of four assistants, he set in type and printed the Grand Trunk Herald, which he sold with his other papers.[14] This began Edison's long streak of entrepreneurial ventures, as he discovered his talents as a businessman. These talents eventually led him to found 14 companies, including General Electric, which is still one of the largest publicly traded companies in the world.[15][16]
Telegrapher

Edison became a telegraph operator after he saved three-year-old Jimmie MacKenzie from being struck by a runaway train. Jimmie's father, station agent J.U. MacKenzie of Mount Clemens, Michigan, was so grateful that he trained Edison as a telegraph operator. Edison's first telegraphy job away from Port Huron was at Stratford Junction, Ontario, on the Grand Trunk Railway.[17]

In 1866, at the age of 19, Edison moved to Louisville, Kentucky, where, as an employee of Western Union, he worked the Associated Press bureau news wire. Edison requested the night shift, which allowed him plenty of time to spend at his two favorite pastimes—reading and experimenting. Eventually, the latter pre-occupation cost him his job. One night in 1867, he was working with a lead–acid battery when he spilled sulfuric acid onto the floor. It ran between the floorboards and onto his boss's desk below. The next morning Edison was fired.[18]

One of his mentors during those early years was a fellow telegrapher and inventor named Franklin Leonard Pope, who allowed the impoverished youth to live and work in the basement of his Elizabeth, New Jersey, home. Some of Edison's earliest inventions were related to telegraphy, including a stock ticker. His first patent was for the electric vote recorder, (U.S. Patent 90,646),[19] which was granted on June 1, 1869.[20]
Marriages and children

On December 25, 1871, Edison married 16-year-old Mary Stilwell (1855–1884), whom he had met two months earlier; she was an employee at one of his shops. They had three children:

Marion Estelle Edison (1873–1965), nicknamed "Dot"[21]
Thomas Alva Edison, Jr. (1876–1935), nicknamed "Dash"[22]
William Leslie Edison (1878–1937) Inventor, graduate of the Sheffield Scientific School at Yale, 1900.[23]

Mary Edison died at age 29 on August 9, 1884, of unknown causes: possibly from a brain tumor[24] or a morphine overdose. Doctors frequently prescribed morphine to women in those years to treat a variety of causes, and researchers believe that some of her symptoms sounded as if they were associated with morphine poisoning.[25]
Mina Edison in 1906

On February 24, 1886, at the age of thirty-nine, Edison married the 20-year-old Mina Miller (1866–1947) in Akron, Ohio.[26] She was the daughter of the inventor Lewis Miller, co-founder of the Chautauqua Institution and a benefactor of Methodist charities. They also had three children together:

Madeleine Edison (1888–1979), who married John Eyre Sloane.[27][28]
Charles Edison (1890–1969), Governor of New Jersey (1941 – 1944), who took over his father's company and experimental laboratories upon his father's death.[29]
Theodore Miller Edison (1898–1992), (MIT Physics 1923), credited with more than 80 patents.

Mina outlived Thomas Edison, dying on August 24, 1947.[30][31]
Beginning his career
Photograph of Edison with his phonograph (2nd model), taken in Mathew Brady's Washington, DC studio in April 1878.

Mary Had a Little Lamb
Thomas Edison reciting "Mary Had a Little Lamb"
Problems playing this file? See media help.

Edison began his career as an inventor in Newark, New Jersey, with the automatic repeater and his other improved telegraphic devices, but the invention that first gained him notice was the phonograph in 1877.[32] This accomplishment was so unexpected by the public at large as to appear almost magical. Edison became known as "The Wizard of Menlo Park," New Jersey.[3]

His first phonograph recorded on tinfoil around a grooved cylinder. Despite its limited sound quality and that the recordings could be played only a few times, the phonograph made Edison a celebrity. Joseph Henry, president of the National Academy of Sciences and one of the most renowned electrical scientists in the US, described Edison as "the most ingenious inventor in this country... or in any other".[33] In April 1878, Edison travelled to Washington to demonstrate the phonograph before the National Academy of Sciences, Congressmen, Senators and US President Hayes.[34] The Washington Post described Edison as a "genius" and his presentation as "a scene... that will live in history".[35] Although Edison obtained a patent for the phonograph in 1878,[36] he did little to develop it until Alexander Graham Bell, Chichester Bell, and Charles Tainter produced a phonograph-like device in the 1880s that used wax-coated cardboard cylinders.
Menlo Park
Edison's Menlo Park Laboratory, reconstructed at Greenfield Village at Henry Ford Museum in Dearborn, Michigan. (Note the organ against the back wall)

Edison's major innovation was the first industrial research lab, which was built in Menlo Park, a part of Raritan Township, Middlesex County, New Jersey (today named Edison in his honor). It was built with the funds from the sale of Edison's quadruplex telegraph. After his demonstration of the telegraph, Edison was not sure that his original plan to sell it for $4,000 to $5,000 was right, so he asked Western Union to make a bid. He was surprised to hear them offer $10,000 ($208,400 in today's dollars.[37]), which he gratefully accepted.[38] The quadruplex telegraph was Edison's first big financial success, and Menlo Park became the first institution set up with the specific purpose of producing constant technological innovation and improvement. Edison was legally attributed with most of the inventions produced there, though many employees carried out research and development under his direction. His staff was generally told to carry out his directions in conducting research, and he drove them hard to produce results.

William Joseph Hammer, a consulting electrical engineer, began his duties as a laboratory assistant to Edison in December 1879. He assisted in experiments on the telephone, phonograph, electric railway, iron ore separator, electric lighting, and other developing inventions. However, Hammer worked primarily on the incandescent electric lamp and was put in charge of tests and records on that device. In 1880, he was appointed chief engineer of the Edison Lamp Works. In his first year, the plant under General Manager Francis Robbins Upton turned out 50,000 lamps. According to Edison, Hammer was "a pioneer of incandescent electric lighting".[39] Frank J. Sprague, a competent mathematician and former naval officer, was recruited by Edward H. Johnson and joined the Edison organization in 1883. One of Sprague's contributions to the Edison Laboratory at Menlo Park was to expand Edison's mathematical methods. Despite the common belief that Edison did not use mathematics, analysis of his notebooks reveal that he was an astute user of mathematical analysis conducted by his assistants such as Francis Robbins Upton, for example, determining the critical parameters of his electric lighting system including lamp resistance by an analysis of Ohm's Law, Joule's Law and economics.[40]

Nearly all of Edison's patents were utility patents, which were protected for a 17-year period and included inventions or processes that are electrical, mechanical, or chemical in nature. About a dozen were design patents, which protect an ornamental design for up to a 14-year period. As in most patents, the inventions he described were improvements over prior art. The phonograph patent, in contrast, was unprecedented as describing the first device to record and reproduce sounds.[41]

In just over a decade, Edison's Menlo Park laboratory had expanded to occupy two city blocks. Edison said he wanted the lab to have "a stock of almost every conceivable material".[42] A newspaper article printed in 1887 reveals the seriousness of his claim, stating the lab contained "eight thousand kinds of chemicals, every kind of screw made, every size of needle, every kind of cord or wire, hair of humans, horses, hogs, cows, rabbits, goats, minx, camels ... silk in every texture, cocoons, various kinds of hoofs, shark's teeth, deer horns, tortoise shell ... cork, resin, varnish and oil, ostrich feathers, a peacock's tail, jet, amber, rubber, all ores ..." and the list goes on.[43]

Over his desk, Edison displayed a placard with Sir Joshua Reynolds' famous quotation: "There is no expedient to which a man will not resort to avoid the real labor of thinking."[44] This slogan was reputedly posted at several other locations throughout the facility.

With Menlo Park, Edison had created the first industrial laboratory concerned with creating knowledge and then controlling its application.[45]
Carbon telephone transmitter

In 1877–78, Edison invented and developed the carbon microphone used in all telephones along with the Bell receiver until the 1980s. After protracted patent litigation, in 1892 a federal court ruled that Edison and not Emile Berliner was the inventor of the carbon microphone. The carbon microphone was also used in radio broadcasting and public address work through the 1920s.[citation needed]
Electric light
Main article: History of the light bulb
Thomas Edison's first successful light bulb model, used in public demonstration at Menlo Park, December 1879

In 1878 Edison began working on a system of electrical illumination, something he hoped could compete with gas and oil based lighting.[46] He began by tackling the problem of creating a long lasting incandescent lamp, something that would be needed for indoor use. Many earlier inventors had previously devised incandescent lamps, including Alessandro Volta's demonstration of a glowing wire in 1800 and inventions by Henry Woodward and Mathew Evans. Others who developed early and commercially impractical incandescent electric lamps included Humphry Davy, James Bowman Lindsay, Moses G. Farmer,[47] William E. Sawyer, Joseph Swan and Heinrich Göbel. Some of these early bulbs had such flaws as an extremely short life, high expense to produce, and high electric current drawn, making them difficult to apply on a large scale commercially.[48]:217–218 Edison realized that in order to keep the thickness of the copper wire needed to connect a series of electric lights to an economically manageable size he would have to come up with a lamp that would draw a low amount of current. This meant the lamp would have to have a high resistance and run at a low voltage (around 110 volts).[49]

After many experiments, first with carbon filaments and then with platinum and other metals, in the end Edison returned to a carbon filament.[50] The first successful test was on October 22, 1879;[48]:186 it lasted 13.5 hours.[51] Edison continued to improve this design and by November 4, 1879, filed for U.S. patent 223,898 (granted on January 27, 1880) for an electric lamp using "a carbon filament or strip coiled and connected to platina contact wires".[52] This was the first commercially practical incandescent light.[53]

Although the patent described several ways of creating the carbon filament including "cotton and linen thread, wood splints, papers coiled in various ways",[52] it was not until several months after the patent was granted that Edison and his team discovered a carbonized bamboo filament that could last over 1,200 hours. The idea of using this particular raw material originated from Edison's recalling his examination of a few threads from a bamboo fishing pole while relaxing on the shore of Battle Lake in the present-day state of Wyoming, where he and other members of a scientific team had traveled so that they could clearly observe a total eclipse of the sun on July 29, 1878, from the Continental Divide.[54]
U.S. Patent#223898: Electric-Lamp. Issued January 27, 1880.

In 1878, Edison formed the Edison Electric Light Company in New York City with several financiers, including J. P. Morgan and the members of the Vanderbilt family. Edison made the first public demonstration of his incandescent light bulb on December 31, 1879, in Menlo Park. It was during this time that he said: "We will make electricity so cheap that only the rich will burn candles."[55]
The Oregon Railroad and Navigation Company's new steamship, the Columbia, was the first commercial application for Edison's incandescent light bulb in 1880.

Henry Villard, president of the Oregon Railroad and Navigation Company, had attended Edison's 1879 demonstration. Villard quickly became impressed and requested Edison install his electric lighting system aboard his company's new steamer, the Columbia. Although hesitant at first, Edison relented and agreed to Villard's request. Following most of its completion in May 1880, the Columbia was sent to New York City, where Edison and his personnel installed Columbia's new lighting system. Due to this, the Columbia became Edison's first commercial application for his incandescent light bulb. The Edison equipment was eventually removed from Columbia in 1895.[56][57][58][59]

Lewis Latimer joined the Edison Electric Light Company in 1884. Latimer had received a patent in January 1881 for the "Process of Manufacturing Carbons", an improved method for the production of carbon filaments for lightbulbs. Latimer worked as an engineer, a draftsman and an expert witness in patent litigation on electric lights.[60]

George Westinghouse's company bought Philip Diehl's competing induction lamp patent rights (1882) for $25,000, forcing the holders of the Edison patent to charge a more reasonable rate for the use of the Edison patent rights and lowering the price of the electric lamp.[61]

On October 8, 1883, the US patent office ruled that Edison's patent was based on the work of William Sawyer and was therefore invalid. Litigation continued for nearly six years, until October 6, 1889, when a judge ruled that Edison's electric-light improvement claim for "a filament of carbon of high resistance" was valid.[62] To avoid a possible court battle with Joseph Swan, whose British patent had been awarded a year before Edison's, he and Swan formed a joint company called Ediswan to manufacture and market the invention in Britain.

Mahen Theatre in Brno (in what is now the Czech Republic), which opened in 1882, was the first public building in the world to use Edison's electric lamps, with the installation supervised by Edison's assistant in the invention of the lamp, Francis Jehl.[63] In September 2010, a sculpture of three giant light bulbs was erected in Brno, in front of the theatre.[64]
Electric power distribution

After devising a commercially viable electric light bulb on October 21, 1879, Edison went on to develop an electric "utility" designed to compete with the then existent gas lighting utilities.[65] In 1889 he patented a system for electricity distribution and on December 17, 1880, he founded the Edison Illuminating Company. The company established the first investor-owned electric utility in 1882 on Pearl Street Station, New York City. It was on September 4, 1882, that Edison switched on his Pearl Street generating station's electrical power distribution system, which provided 110 volts direct current (DC) to 59 customers in lower Manhattan.[66]

Earlier in the year, in January 1882, he had switched on the first steam-generating power station at Holborn Viaduct in London. The DC supply system provided electricity supplies to street lamps and several private dwellings within a short distance of the station. On January 19, 1883, the first standardized incandescent electric lighting system employing overhead wires began service in Roselle, New Jersey.
War of currents
Main article: War of Currents
Extravagant displays of electric lights quickly became a feature of public events, as in this picture from the 1897 Tennessee Centennial Exposition.

As Edison was expanding his direct current (DC) power delivery system he began receiving stiff competition from companies installing alternating current (AC) systems. From the early 1880s on AC arc lighting systems for streets and large spaces had been an expanding business in the US. With development of transformers in Europe and by Westinghouse Electric in the US in 1885-1886 it became possible to transmit AC very long distances over thinner and cheaper wires, and "step down" the voltage at the destination for distribution to users. This allowed AC to be used not only in street lighting but also in lighting for small business and domestic customers, the market Edison's patented low voltage DC incandescent lamp system had been designed to supply.[67] Edison's DC empire began suffering from one of its chief drawbacks: it was suitable only for the high density of customers found in large cities. Edison's DC plants could not deliver electricity to customers who were more than one mile from the plant and the short range left a patchwork of un-supplied customers in-between plants. Small cities and rural areas could not afford an Edison style system at all. This left a large part of market without electrical service and AC companies were expanding into this gap.

Edison expressed views that AC was unworkable and the high voltages used were dangerous. As George Westinghouse was installing his first AC systems in 1886, Thomas Edison began a pattern of striking out personally against his chief rival stating, "Just as certain as death, Westinghouse will kill a customer within six months after he puts in a system of any size. He has got a new thing and it will require a great deal of experimenting to get it working practically."[68] Many reasons have been put forward for Edison's anti-AC stance. One notion is that the inventor may not have been able to grasp the more abstract theories behind AC and was trying to avoid developing a system he did not understand. Edison also appeared to have been worried about the high voltage from some competitor's misinstalled AC system killing customers and hurting the sales of electric power systems in general.[69] On top of all that was the simple fact that Edison Electric had based their entire design on low voltage DC and switching a standard after they had installed over 100 systems was, in Edison's mind, out of the question. By the end of 1887 Edison Electric was beginning to lose market share with Westinghouse, who had built 68 AC-based power stations to Edison's 121 DC-based stations. To make matters worse for Edison, the Thomson-Houston Electric Company of Lynn, Massachusetts (another AC-based competitor) had built 22 power stations.[70]

Parallel to the expanding competition between Edison and the AC companies was a rising public furor over a series of deaths in the spring of 1888 caused by pole mounted high voltage alternating current lines that turned into a media frenzy against the current and the seemingly greedy and callous lighting companies that used it.[71][72] Edison took advantage of the public perception that AC was dangerous and teamed up with the self-styled New York anti-AC crusader Harold P. Brown in a propaganda campaign, aiding Brown in the public electrocution of animals with AC as well as supported legislation to control and severely limit AC installations and voltages (to the point of making it an ineffective power delivery system) in what was now being referred to as a "battle of currents". The development of the electric chair was used in an attempt to portray AC as having a greater lethal potential than DC and smear Westinghouse at the same time via Edison colluding with Brown and Westinghouse's chief AC rival, the Thomson-Houston Electric Company, to make sure the first electric chair was powered by a Westinghouse AC generator.

Thomas Edison's staunch anti-AC tactics were not sitting well with his own stock holders. By the early 1890s Edison's company was generating much smaller profits than its AC rivals, and the War of Currents would come to an end in 1892 with Edison being forced out of controlling his own company. That year the financier J P Morgan engineered a merger of Edison General Electric with Thomson-Houston that basically put the board of Thomson-Houston in charge of the new company called General Electric (dropping "Edison" from its name). General Electric now controlled three quarters of the US electrical business and would go on to compete with Westinghouse for the AC market.[73][74]
Other inventions and projects
Fluoroscopy

Edison is credited with designing and producing the first commercially available fluoroscope, a machine that uses X-rays to take radiographs. Until Edison discovered that calcium tungstate fluoroscopy screens produced brighter images than the barium platinocyanide screens originally used by Wilhelm Röntgen, the technology was capable of producing only very faint images.

The fundamental design of Edison's fluoroscope is still in use today, although Edison himself abandoned the project after nearly losing his own eyesight and seriously injuring his assistant, Clarence Dally. Dally had made himself an enthusiastic human guinea pig for the fluoroscopy project and in the process been exposed to a poisonous dose of radiation. He later died of injuries related to the exposure. In 1903, a shaken Edison said "Don't talk to me about X-rays, I am afraid of them."[75]
Telegraph improvements

The key to Edison's fortunes was telegraphy. With knowledge gained from years of working as a telegraph operator, he learned the basics of electricity. This allowed him to make his early fortune with the stock ticker, the first electricity-based broadcast system. On August 9, 1892, Edison received a patent for a two-way telegraph.
Motion pictures
File:Leonard Cushing Kinetograph 1894.ogvPlay media
The June 1894 Leonard–Cushing bout. Each of the six one-minute rounds recorded by the Kinetoscope was made available to exhibitors for $22.50.[76] Customers who watched the final round saw Leonard score a knockdown.

Edison was also granted a patent for the motion picture camera or "Kinetograph". He did the electromechanical design, while his employee W.K.L. Dickson, a photographer, worked on the photographic and optical development. Much of the credit for the invention belongs to Dickson.[48] In 1891, Thomas Edison built a Kinetoscope, or peep-hole viewer. This device was installed in penny arcades, where people could watch short, simple films. The kinetograph and kinetoscope were both first publicly exhibited May 20, 1891.[77]

In April 1896, Thomas Armat's Vitascope, manufactured by the Edison factory and marketed in Edison's name, was used to project motion pictures in public screenings in New York City. Later he exhibited motion pictures with voice soundtrack on cylinder recordings, mechanically synchronized with the film.

Officially the kinetoscope entered Europe when the rich American Businessman Irving T. Bush (1869–1948) bought from the Continental Commerce Company of Frank Z. Maguire and Joseph D. Baucus a dozen machines. Bush placed from October 17, 1894, the first kinetoscopes in London. At the same time the French company Kinétoscope Edison Michel et Alexis Werner bought these machines for the market in France. In the last three months of 1894, The Continental Commerce Company sold hundreds of kinetoscopes in Europe (i.e. the Netherlands and Italy). In Germany and in Austria-Hungary the kinetoscope was introduced by the Deutsche-österreichische-Edison-Kinetoscop Gesellschaft, founded by the Ludwig Stollwerck[78] of the Schokoladen-Süsswarenfabrik Stollwerck & Co of Cologne.

The first kinetoscopes arrived in Belgium at the Fairs in early 1895. The Edison's Kinétoscope Français, a Belgian company, was founded in Brussels on January 15, 1895, with the rights to sell the kinetoscopes in Monaco, France and the French colonies. The main investors in this company were Belgian industrialists.[79]

On May 14, 1895, the Edison's Kinétoscope Belge was founded in Brussels. The businessman Ladislas-Victor Lewitzki, living in London but active in Belgium and France, took the initiative in starting this business. He had contacts with Leon Gaumont and the American Mutoscope and Biograph Co. In 1898 he also became a shareholder of the Biograph and Mutoscope Company for France.[79]

Edison's film studio made close to 1,200 films. The majority of the productions were short films showing everything from acrobats to parades to fire calls including titles such as Fred Ott's Sneeze (1894), The Kiss (1896), The Great Train Robbery (1903), Alice's Adventures in Wonderland (1910), and the first Frankenstein film in 1910. In 1903, when the owners of Luna Park, Coney Island announced they would execute Topsy the elephant by strangulation, poisoning, and electrocution (with the electrocution part ultimately killing the elephant), Edison Manufacturing sent a crew to film it, releasing it that same year with the title Electrocuting an Elephant.
File:A Day with Thomas Edison (1922).webmPlay media
A Day with Thomas Edison (1922)

As the film business expanded competing exhibitors routinely copied and exhibited each other's films.[80] To better protect the copyrights on his films, Edison deposited prints of them on long strips of photographic paper with the U.S. copyright office. Many of these paper prints survived longer and in better condition than the actual films of that era.[81]

In 1908, Edison started the Motion Picture Patents Company, which was a conglomerate of nine major film studios (commonly known as the Edison Trust). Thomas Edison was the first honorary fellow of the Acoustical Society of America, which was founded in 1929.

Edison said his favorite movie was The Birth of a Nation. He thought that talkies had "spoiled everything" for him. "There isn't any good acting on the screen. They concentrate on the voice now and have forgotten how to act. I can sense it more than you because I am deaf."[82] His favorite stars were Mary Pickford and Clara Bow.[83]
Mining

In 1901, Edison visited an industrial exhibition in the Sudbury area in Ontario, Canada and thought nickel and cobalt deposits there could be used in his production of electrical equipment. He returned as a mining prospector, and is credited with the original discovery of the Falconbridge ore body. His attempts to mine the ore body were not successful, however, and he abandoned his mining claim in 1903.[84] A street in Falconbridge, as well as the Edison Building, which served as the head office of Falconbridge Mines, are named for him.
West Orange and Fort Myers (1886–1931)
Thomas A. Edison Industries Exhibit, Primary Battery section, 1915

Edison moved from Menlo Park after the death of his first wife, Mary, in 1884, and purchased a home known as "Glenmont" in 1886 as a wedding gift for his second wife, Mina, in Llewellyn Park in West Orange, New Jersey. In 1885, Thomas Edison had bought property in Fort Myers, Florida, and built what was later called Seminole Lodge as a winter retreat. Edison and Mina spent many winters at their home in Fort Myers, and Edison tried to find a domestic source of natural rubber.

In 1928, Edison joined the Fort Myers Civitan Club. He believed strongly in the organization, writing that "The Civitan Club is doing things—big things—for the community, state, and nation, and I certainly consider it an honor to be numbered in its ranks."[85] He was an active member in the club until his death, sometimes bringing Henry Ford to the club's meetings.
Final years
Henry Ford, Thomas Edison, and Harvey Firestone, respectively. Ft. Myers, Florida, February 11, 1929

Henry Ford, the automobile magnate, later lived a few hundred feet away from Edison at his winter retreat in Fort Myers, Florida. Edison even contributed technology to the automobile. They were friends until Edison's death. Edison was active in business right up to the end. Just months before his death, the Lackawanna Railroad inaugurated suburban electric train service from Hoboken to Montclair, Dover, and Gladstone, New Jersey. Electrical transmission for this service was by means of an overhead catenary system using direct current, which Edison had championed. Despite his frail condition, Edison was at the throttle of the first electric MU (Multiple-Unit) train to depart Lackawanna Terminal in Hoboken in September 1930, driving the train the first mile through Hoboken yard on its way to South Orange.[86]

This fleet of cars would serve commuters in northern New Jersey for the next 54 years until their retirement in 1984. A plaque commemorating Edison's inaugural ride can be seen today in the waiting room of Lackawanna Terminal in Hoboken, which is presently operated by New Jersey Transit.[86]

Edison was said to have been influenced by a popular fad diet in his last few years; "the only liquid he consumed was a pint of milk every three hours".[48] He is reported to have believed this diet would restore his health. However, this tale is doubtful. In 1930, the year before Edison died, Mina said in an interview about him, "correct eating is one of his greatest hobbies." She also said that during one of his periodic "great scientific adventures", Edison would be up at 7:00, have breakfast at 8:00, and be rarely home for lunch or dinner, implying that he continued to have all three.[82]

Edison became the owner of his Milan, Ohio, birthplace in 1906. On his last visit, in 1923, he was reportedly shocked to find his old home still lit by lamps and candles.[citation needed]
Death

Edison died of complications of diabetes on October 18, 1931, in his home, "Glenmont" in Llewellyn Park in West Orange, New Jersey, which he had purchased in 1886 as a wedding gift for Mina. He is buried behind the home.[87][88]

Edison's last breath is reportedly contained in a test tube at the Henry Ford Museum. Ford reportedly convinced Charles Edison to seal a test tube of air in the inventor's room shortly after his death, as a memento. A plaster death mask was also made.[89] Mina died in 1947.
Views on politics, religion and metaphysics

Historian Paul Israel has characterized Edison as a "freethinker".[48] Edison was heavily influenced by Thomas Paine's The Age of Reason.[48] Edison defended Paine's "scientific deism", saying, "He has been called an atheist, but atheist he was not. Paine believed in a supreme intelligence, as representing the idea which other men often express by the name of deity."[48] In an October 2, 1910, interview in the New York Times Magazine, Edison stated:

Nature is what we know. We do not know the gods of religions. And nature is not kind, or merciful, or loving. If God made me — the fabled God of the three qualities of which I spoke: mercy, kindness, love — He also made the fish I catch and eat. And where do His mercy, kindness, and love for that fish come in? No; nature made us — nature did it all — not the gods of the religions.[90]

Edison was accused of being an atheist for those remarks, and although he did not allow himself to be drawn into the controversy publicly, he clarified himself in a private letter:

You have misunderstood the whole article, because you jumped to the conclusion that it denies the existence of God. There is no such denial, what you call God I call Nature, the Supreme intelligence that rules matter. All the article states is that it is doubtful in my opinion if our intelligence or soul or whatever one may call it lives hereafter as an entity or disperses back again from whence it came, scattered amongst the cells of which we are made.[48]

He also stated, "I do not believe in the God of the theologians; but that there is a Supreme Intelligence I do not doubt."[91]

Nonviolence was key to Edison's moral views, and when asked to serve as a naval consultant for World War I, he specified he would work only on defensive weapons and later noted, "I am proud of the fact that I never invented weapons to kill." Edison's philosophy of nonviolence extended to animals as well, about which he stated: "Nonviolence leads to the highest ethics, which is the goal of all evolution. Until we stop harming all other living beings, we are still savages."[92] However, he is also notorious for having electrocuted a number of dogs in 1888, both by direct and alternating current, in an attempt to argue that the former (which he had a vested business interest in promoting) was safer than the latter (favored by his rival George Westinghouse).[93]

Edison's success in promoting direct current as less lethal also led to alternating current being used in the electric chair adopted by New York in 1889 as a supposedly humane execution method. Because Westinghouse was angered by the decision, he funded Eighth Amendment-based appeals for inmates set to die in the electric chair, ultimately resulting in Edison providing the generators which powered early electrocutions and testifying successfully on behalf of the state that electrocution was a painless method of execution.[94]

In 1920, Edison set off a media sensation when he told B. C. Forbes of American Magazine that he was working on a "spirit phone" to allow communication with the dead, a story which other newspapers and magazines repeated.[95] Edison later disclaimed the idea, telling the New York Times in 1926 that "I really had nothing to tell him, but I hated to disappoint him so I thought up this story about communicating with spirits, but it was all a joke."[96]
Views on money

Thomas Edison was an advocate for monetary reform in the United States. He was ardently opposed to the gold standard and debt-based money. Famously, he was quoted in the New York Times stating "Gold is a relic of Julius Caesar, and interest is an invention of Satan."[97]

In the same article, he expounded upon the absurdity of a monetary system in which the taxpayer of the United States, in need of a loan, be compelled to pay in return perhaps double the principal, or even greater sums, due to interest. His basic point was that if the Government can produce debt-based money, it could equally as well produce money that was a credit to the taxpayer.[97]

He thought at length about the subject of money over 1921 and 1922. In May 1922, he published a proposal, entitled "A Proposed Amendment to the Federal Reserve Banking System".[98] In it, he detailed an explanation of a commodity-backed currency, in which the Federal Reserve would issue interest-free currency to farmers, based on the value of commodities they produced. During a publicity tour that he took with friend and fellow inventor, Henry Ford, he spoke publicly about his desire for monetary reform. For insight, he corresponded with prominent academic and banking professionals. In the end, however, Edison's proposals failed to find support, and were eventually abandoned.[99][100]
Awards
Portrait of Edison by Abraham Archibald Anderson (1890), National Portrait Gallery

The President of the Third French Republic, Jules Grévy, on the recommendation of his Minister of Foreign Affairs Jules Barthélemy-Saint-Hilaire and with the presentations of the Minister of Posts and Telegraphs Louis Cochery, designated Edison with the distinction of an 'Officer of the Legion of Honour' (Légion d'honneur) by decree on November 10, 1881;[101] He also named a Chevalier in 1879, and a Commander in 1889.[102]

In 1887, Edison won the Matteucci Medal. In 1890, he was elected a member of the Royal Swedish Academy of Sciences.

The Philadelphia City Council named Edison the recipient of the John Scott Medal in 1889.[102]

In 1899, Edison was awarded the Edward Longstreth Medal of The Franklin Institute.[103]

He was named an Honorable Consulting Engineer at the Louisiana Purchase Exposition World's fair in 1904.[102]

In 1908, Edison received the American Association of Engineering Societies John Fritz Medal.[102]

In 1915, Edison was awarded Franklin Medal of The Franklin Institute for discoveries contributing to the foundation of industries and the well-being of the human race.[104]

In 1920, The United States Navy department awarded him the Navy Distinguished Service Medal.[102]

In 1923, The American Institute of Electrical Engineers created the Edison Medal and he was its first recipient.[102]

In 1927, he was granted membership in the National Academy of Sciences.[102]

On May 29, 1928, Edison received the Congressional Gold Medal.[102]

In 1983, the United States Congress, pursuant to Senate Joint Resolution 140 (Public Law 97—198), designated February 11, Edison's birthday, as National Inventor's Day.[105]

Life magazine (USA), in a special double issue in 1997, placed Edison first in the list of the "100 Most Important People in the Last 1000 Years", noting that the light bulb he promoted "lit up the world". In the 2005 television series The Greatest American, he was voted by viewers as the fifteenth-greatest.

In 2008, Edison was inducted in the New Jersey Hall of Fame.

In 2010, Edison was honored with a Technical Grammy Award.

In 2011, Edison was inducted into the Entrepreneur Walk of Fame, and named a Great Floridian by the Florida Governor and Cabinet.[106]
Tributes
Places and people named for Edison

Several places have been named after Edison, most notably the town of Edison, New Jersey. Thomas Edison State College, a nationally known college for adult learners, is in Trenton, New Jersey. Two community colleges are named for him: Edison State College in Fort Myers, Florida, and Edison Community College in Piqua, Ohio.[107] There are numerous high schools named after Edison (see Edison High School) and other schools including Thomas A. Edison Middle School.

In 1883, the City Hotel in Sunbury, Pennsylvania was the first building to be lit with Edison's three-wire system. The hotel was renamed The Hotel Edison upon Edison's return to the City on 1922.[108]

Lake Thomas A Edison in California was named after Edison to mark the 75th anniversary of the incandescent light bulb.[109]

Edison was on hand to turn on the lights at the Hotel Edison in New York City when it opened in 1931.[110]

Three bridges around the United States have been named in Edison's honor: the Edison Bridge in New Jersey,[111] the Edison Bridge in Florida,[112] and the Edison Bridge in Ohio.[113]

In space, his name is commemorated in asteroid 742 Edisona.
Museums and memorials
Statue of young Thomas Edison by the railroad tracks in Port Huron, Michigan.

In West Orange, New Jersey, the 13.5 acres (5.5 hectares) Glenmont estate is maintained and operated by the National Park Service as the Edison National Historic Site, as is his nearby laboratory and workshops including the reconstructed Black Maria- the world's first movie studio.[114] The Thomas Alva Edison Memorial Tower and Museum is in the town of Edison, New Jersey.[115] In Beaumont, Texas, there is an Edison Museum, though Edison never visited there.[116] The Port Huron Museum, in Port Huron, Michigan, restored the original depot that Thomas Edison worked out of as a young newsbutcher. The depot has been named the Thomas Edison Depot Museum.[117] The town has many Edison historical landmarks, including the graves of Edison's parents, and a monument along the St. Clair River. Edison's influence can be seen throughout this city of 32,000.

In Detroit, the Edison Memorial Fountain in Grand Circus Park was created to honor his achievements. The limestone fountain was dedicated October 21, 1929, the fiftieth anniversary of the creation of the lightbulb.[118] On the same night, The Edison Institute was dedicated in nearby Dearborn.
Companies bearing Edison's name
In 1915

Edison General Electric, merged with Thomson-Houston Electric Company to form General Electric
Commonwealth Edison, now part of Exelon
Consolidated Edison
Edison International
Detroit Edison, a unit of DTE Energy
Edison S.p.A., a unit of Italenergia
Trade association the Edison Electric Institute, a lobbying and research group for investor-owned utilities in the United States
Edison Ore-Milling Company
Edison Portland Cement Company
Southern California Edison

Awards named in honor of Edison

The Edison Medal was created on February 11, 1904, by a group of Edison's friends and associates. Four years later the American Institute of Electrical Engineers (AIEE), later IEEE, entered into an agreement with the group to present the medal as its highest award. The first medal was presented in 1909 to Elihu Thomson. It is the oldest award in the area of electrical and electronics engineering, and is presented annually "for a career of meritorious achievement in electrical science, electrical engineering or the electrical arts."

In the Netherlands, the major music awards are named the Edison Award after him. The award is an annual Dutch music prize, awarded for outstanding achievements in the music industry, and is one of the oldest music awards in the world, having been presented since 1960.

The American Society of Mechanical Engineers concedes the Thomas A. Edison Patent Award to individual patents since 2000.[119]

ALBERT EINSTEIN BIOGRAPHY

ALBERT EINSTEIN BIOGRAPHY

Einstein Biography:

"That is true, even when nobody has yet succeeded in being somebody else."

Albert Einstein, 1947

EINSTEIN

Albert Einstein was born on March 14, 1879 in Ulm, the first child of the Jewish couple Hermann and Pauline Einstein, née Koch. In June 1880 the family moved to Munich where Hermann Einstein and his brother Jakob founded the electrical engineering company Einstein & Cie. Albert Einstein's sister Maria, called Maja, was born on November 18, 1881. Einstein's childhood was a normal one, except that to his family's irritation, he learnt to speak at a late age. Beginning in 1884 he received private education in order to get prepared for school. 1885 he started learning to play violin. Beginning in 1885 he received his primary education at a Catholic school in Munich (Petersschule); in 1888 he changed over to the Luitpold-Gymnasium, also in Munich. However, as this education was not to his liking and, in addition, he did not get along with his form-master he left this school in 1894 without a degree and joined his family in Italy where they had settled meanwhile.

In order to be admitted to study at the "Eidgenoessische Polytechnische Schule" (later renamed ETH) in Zurich, Einstein took his entrance examination in October 1895. However, some of his results were insufficient and, following the advice of the rector, he attended the "Kantonsschule" in the town of Aarau in order to improve his knowledge. In early October 1896 he received his school-leaving certificate and shortly thereafter enrolled at the Eidgenoessische Polytechnische Schule with the goal of becoming a teacher in Mathematics and Physics. Einstein, being an average student, finished his studies with a diploma degree in July 1900. He then applied, without success, for assistantships at the Polytechnische Schule and other universities. Meanwhile he had abandoned the German citizenship and formally applied for the Swiss one which he was granted on February 21, 1901.

ETH, ca. 1905

1 Eidgenoessische Technische Hochschule (ETH) Zurich, ca. 1905

Search for employment continued. Between May 1901 and January 1902 he was teacher in Winterthur and Schaffhausen. Afterwards he moved to the Swiss capital Bern. In order to make his living, he gave private lessons in mathematics and physics. At this time also the Bernese "Akademie Olympia" was founded by Albert Einstein, Maurice Solovine and Conrad Habicht. During meetings in the evening scientific and philosophical questions were discussed. Einstein himself noted that this academy was beneficial for his career and even when he already lived in the US, he remained a loyal member.

In January 1902 Lieserl, daughter of Einstein and Mileva Maric, a former fellow-student, was born in Hungary. That Einstein had an illegitimate child has been only learned a few years ago when private letters mentioning this child were published. Nothing is known about the life of Einstein's daughter; probably she was released to become adopted. At the end of 1902 Einstein's father died in Milan. On January 6, 1903 he married Mileva Maric - against the wills of both families. In May 1904 Einstein's first son, Hans Albert, was born and in July 1910 his second son, Eduard.

Through mediation of a former fellow-student, Marcel Grossmann, in December 1901 Einstein applied for a position at the Bernese patent-office which he was granted, initially for a time of probation only. Beginning on June 23, 1902 he became technical expert, third class, at this office. Despite of the work associated with this position he found time for further research in theoretical physics.

Einstein's Dissertation:

"Eine neue Bestimmung der Moleküldimensionen"

"A New Determination of Molecular Dimensions"

Dedication "Meinem Freunde Herrn Dr. Marcel Grossmann"

Bern, 30. April 1905



Published by: Buchdruckerei K. J. Wyss, Bern (1906)

Slightly revised version published in Annalen der Physik, Band 19 (1906), page 289 - 305


Cover - Einstein's Inaugural - Dissertation

2 Cover - Einstein's Inaugural - Dissertation

In April 1905 Einstein submitted his doctoral thesis "A New Determination of Molecular Dimensions" to the university in Zurich which was accepted in July. During this same year he published four pioneering papers in the scientific magazine "Annalen der Physik" which revolutionized physics around the turn of the century. Three of the papers will be briefly mentioned here: In the first article "On A Heuristic Point of View Concerning the Production and Transformation of Light" Einstein proposed that electromagnetic radiation must consist of quantums or photons. Even though this theory is capable of explaining - among other things - the photoelectric effect it was at first rejected by physicists, namely by the pioneer of modern physics, Max Planck, later, however, confirmed by him and adopted. This work became the foundation of a quantum theory and for this in particular Einstein received the Nobel Prize for the year 1921. The paper "On the Electrodynamics of Moving Bodies" delineates the principles of special relativity which deals with questions of objects as part of different coordination systems moving with constant speed relative to each other. It resulted in a new interpretation of the conception of space and time and relies on the constancy of the speed of light and the principle of relativity which postulates that it is impossible to determine motions in an absolute way. Shortly thereafter the paper "Does the Inertia of a Body Depend upon its Energy Content?" was published. It contains the famous equation E = m · c2 stating the equivalence of mass and energy. Through these publications Einstein attracted the attention of the scientific community. At the end of 1906 he published the paper "Planck's Theory of Radiation and the Theory of Specific Heat" which can be regarded as being the first publication on the quantum theory of the solid state.

Einstein's famous equation: Einstein-handwriting

In April 1906 Einstein was promoted to technical expert, second class, at the patent-office in Bern. His "Habilitation" (in the German-speaking countries a thesis to be submitted in order to be eligible for a position at the professorial level at the university) things did not go so well. His first application was turned down in 1907 by the university of Bern. In early 1908, however, he was successful and at the end of the same year he gave his first lecture. Einstein had decided that he wanted to devote his time entirely to science; hence, he gave up his position at the patent-office in October 1909 and in the same month he started to work as "Ausserordentlicher Professor" (adjunct professor) of theoretical physics at the university of Zurich. In 1911 Einstein was offered a chair at the German university in Prague which he took on. However, already one year thereafter he returned to Switzerland after having been offered a professorial position at the ETH.

Impressed by Einstein's achievements, Max Planck and the physical chemist Walther Nernst attempted to lure the young Einstein to Berlin, then stronghold of natural sciences. They wanted to make him a member of the Prussian Academy of Sciences, offer him a professorial position without teaching responsibilities at Berlin university and make him the head of the - still to be founded - Kaiser-Wilhelm-Institute of Physics. For Einstein this offer was so tempting that he accepted and in April 1914 moved to Berlin with his family. On July 2nd, 1914, he gave his inaugural lecture at the Prussian Academy.

Contrary to his professional advance, Einstein's marriage did not go well. In consequence, already in July 1914 his wife and children returned to Zurich. As Einstein was not willing to keep up his marriage with Mileva they became divorced in February 1919. From 1917 on Einstein became sick, suffering from various diseases resulting in a general weakness which lasted until 1920. Throughout this time he was under the loving care of his cousin Elsa Loewenthal. They fell in love with each other and on June 2nd, 1919, he married Elsa who had already two daughters, Ilse and Margot, from her first marriage. The couple then moved to Haberlandstrasse 5 in Berlin.

Apart from all his work Einstein still found time for playing music. Since his youth he played the violin and later he frequently was seen on the street carrying his violin case. He was an admirer of Bach and Mozart and, through continuous practice, he became a good violinist. Apart from his love for music he was a devoted sailor. Doing this just for fun, here did he find the time to think about problems of physics.

From 1909 to 1916 Albert Einstein worked on a generalization of his Special Theory of Relativity. The results of his efforts were published in March 1916 in the paper "The Foundation of the General Theory of Relativity". This theory investigates coordination systems which experience acceleration relative to each other and also the influence of gravitational fields to time and space. Whereas the Special Theory of Relativity was still intelligible to the layman, this did not apply to the General Theory of Relativity. Moreover, due to the relatively small relativistic effects, this theory was difficult to verify experimentally. Einstein - or his General Theory of Relativity - predicted the perihelion motion of mercury, the gravitational red shift as well as the deflection of light in a gravitational field. He was convinced that light deflection by the gravitational field of the sun could be observed during a total solar eclipse. After several failed observations of total solar eclipses proof came in 1919: On May 29 of that year the English astronomer Arthur Stanley Eddington confirmed Einstein's prediction of light deflection when he observed a total solar eclipse on the volcanic island of Principe in the Gulf of Guinea in western Africa. A second expedition, led by Andrew Crommelin, observed this eclipse in Sobral, Brazil.

Light deflection in the gravitational field of the sun
3 Light deflection (here amplified) in the gravitational field of the sun



Mass curves space and time
4 Mass curves space and time



Total solar eclipse


On September 22, 1919 Einstein received a telegram from the Dutch physician and Nobel laureate Hendrik Antoon Lorentz. It said: “Eddington found star displacement at rim of sun preliminary measurements between nine-tenth of a second and twice that value
Lorentz”

A few days later, on September 27, Albert Einstein wrote a postcard to his mother: "… Joyous news today. H. A. Lorentz telegraphed that the English expeditions have actually measured the deflection of starlight from the sun."

"During a total solar eclipse the sun is completely covered by the moon passing between the sun and Earth. Due to the relatively stringent conditions for the constellation of the moon between Earth and the sun, a total solar eclipse is very rare." (German Aerospace Center DLR)

5 Total solar eclipse


The official result of these expeditions was announced on November 6, 1919 during a joint meeting of the Royal Society and the Royal Astronomical Society in London. Thereby Einstein had become the successor of the great Isaac Newton. Joseph John Thomson, president of the Royal Society, stated solemnly "This is the most important result related to the theory of gravitation since the days of Newton...This result is among the greatest achievements of human thinking." This confirmation of the predictions made by the General Theory of Relativity made Einstein world-famous and not only among scientists. The perihelion motion of mercury and the gravitational red shift were also gloriously confirmed experimentally.
Now Einstein and his Theory of Relativity were much talked of. He received invitations and honours from all the world. There was rarely a magazine which did not report on his achievements with the highest praise. On the other hand, since 1920 Einstein and his Theory of Relativity became subject to vigorous attacks which mostly were founded on anti-Semitism. Even Nobel-prize laureates like Philipp Lenard and Johannes Stark publicly took up a hostile attitude towards Einstein and his theory and pleaded for a "German physics".

In Lenard’s four-volume work of 1936/37 "Deutsche Physik" (German Physics), written on the basis of classical physics of the 19th century and with the accentuation on experimental physics, the theoretical i.e. Jewish physics was almost completely rejected.

Philipp Lenard: "Deutsche Physik" (German Physics)

Volume 1: Einleitung und Mechanik
(Introduction and mechanics)
Volume 2: Akustik und Wärmelehre
(Acoustics and thermodynamics)
Volume 3: Optik, Elektrostatik und Anfänge der Elektrodynamik
(Optics, electrostatics and beginnings of electrodynamics)
Volume 4: Magnetismus, Elektrodynamik und Anfänge von Weiterem
(Magnetism, electrodynamics and beginnings of further physics)


Cover "Deutsche Physik", Volume 2

6 Cover Volume 2, "Deutsche Physik" (German Physics), Philipp Lenard, 1936/1937

In February 1920 Einstein's mother died in Berlin. Between 1921 and 1923 he travelled, among others, to the US, Britain, France, Japan and Palestine. Since that time he began commenting on political issues more and more frequently, based on a pacifist point of view. In 1922 Einstein became member of the League of Nations' International Committee on Intellectual Cooperation which he left one year later even though he supported the aims of the League of Nations. With a revived belief in the ideals of this organisation Einstein re-joined the commission in May 1924. Opposed to any kind of violence Einstein supported pacifist movements whenever he had the chance. In addition, he supported the cause of the Zionists. He spoke up for the Hebrew University to be founded in Jerusalem to which he later also bequeathed his entire written legacy. In November 1952 Einstein even received the offer to become President of Israel which, however, he turned down.

As the consequence of overworking, in 1928 Einstein developed a heart disease which took him almost a year to recover from. In 1929 after his 50th birthday he built a summer house in the municipality of Caputh where he lived with his family each year between spring and late autumn until the December of 1932.

From 1920 onwards Einstein was working towards a unified field theory which, apart from gravitation, was also to include electrodynamics. This research would last until his death and remained unsuccessful. During the first decade of work towards the unified field theory he was still being supported by colleagues which, however, after having lost their faith in being able to resolve this mystery, turned to other problems such as the theory of the new microcosm or quantum mechanics. Niels Bohr, founder of the so-called Copenhagen School, Max Born, and - from the then young generation - Werner Heisenberg and Wolfgang Pauli among others became the physicists to develop quantum mechanics. Einstein thus became a single fighter and gradually scientifically isolated which, however, did not seem to bother him much. His way into isolation was magnified as Einstein was unable to accept quantum mechanics and constantly exercised his criticism. In particular, he was opposed to the probabilities which were applied in this theory. In this context we have to understand his well-known quotation "God does not throw the dice". However, as far as quantum mechanics is concerned, Einstein was wrong because at present this theory is as widely applied in physics as are Einstein's theories of relativity.

When Einstein and his wife left Caputh in December 1932 to hold a third series of lectures in the US the political situation in Germany had drastically changed for the worse. In the 1932 elections the Nazis had become the strongest political party and in January 1933 Hitler seized power. As the consequence of the crimes of the Nazis during the "Third Reich" Einstein never again set his foot on German soil. In March 1933 he resigned from the Prussian Academy of Sciences and cut off all contacts with any German institution he ever had dealt with.

Albert Einstein found a new home in the US. From November 1933 on he worked at the Institute for Advanced Studies in Princeton, New Jersey, where in 1935 he and his wife bought a house in 112, Mercer Street. In December 1936 Einstein's wife Elsa died. In 1939 his sister Maja moved to his house where she stayed until her death in 1951.

Albert Einstein, ca. 1950

7 Albert Einstein in Princeton, ca. 1950

Since 1939 Europe was on war. Horrified by the imagination that scientists in Germany were working on an atomic bomb, on August 2, 1939 Einstein signed a letter to President Franklin D. Roosevelt in order to draw his attention to the atomic danger. In this letter he pointed the President to the military possibilities of atomic energy and encouraged him to intensity US research into nuclear techniques. This remained his only participation in connection with the atomic bomb.

On October 1, 1940 Einstein was sworn in as American citizen, keeping however also his Swiss citizenship. In a public letter to the United Nations in 1946 Einstein proposed to install a world government in which he saw the only chance for a durable peace. In the following years he intensified these endeavours.

In August 1948 Einstein's first wife, Mileva Maric, died in Zurich. He himself had to undergo abdominal surgery in the same year. In March 1950 he declared his will, making his secretary Helen Dukas and Dr. Otto Nathan jointly to his executors. On April 15, 1955 Einstein was transported to hospital in Princeton because he had severe pain. The diagnosis was a ruptured aneurysm of his abdominal aorta. As a consequence of this illness Albert Einstein died at the age of 76 at 1:15 a.m. on April 18, 1955. Following his wish his remains were cremated the same day and the ashes were about two weeks later put down at an unknown place. Science had lost one of his foremost thinkers and the world had lost a fighter for peace and freedom.

Einstein signature, 1953