Einstein


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Einstein

Albert. 1879--1955, US physicist and mathematician, born in Germany. He formulated the special theory of relativity (1905) and the general theory of relativity (1916), and made major contributions to the quantum theory, for which he was awarded the Nobel prize for physics in 1921. He was noted also for his work for world peace

Einstein

 

a unit of energy of electromagnetic radiation in the optical range. The einstein, which is used in photochemistry, is equal to NAhv, where NA is Avogadro’s number and hv is the energy of the photon. It was named in honor of Albert Einstein and is abbreviated E. When a radiant energy of 1 E is absorbed, the photochemical conversion of 1 mole of the substance should occur, according to Einstein’s law of photochemical equivalence. It follows from the definition of the einstein that the dimension of the unit is determined by the radiation frequency (v) (h is Planck’s constant).

einstein

[′īn‚stīn]
(physics)
A unit of light energy used in photochemistry, equal to Avogadro's number times the energy of one photon of light of the frequency in question.
References in periodicals archive ?
It helps us remain in touch with that childlike capacity for wonder, about such ordinary things as falling apples and elevators, that characterizes Einstein and other great theoretical physicists.
Today, we respect Einstein for his opposition to the spread of nuclear weapons, but he is still best known for one famous political act: In 1939, he signed a letter to President Franklin Roosevelt that warned about German nuclear research and urged a U.
Attending an opulent formal dinner commemorating the 350th anniversary of the founding of Geneva's university in 1909, Einstein turned to the patrician next to him and remarked about the school's great Protestant Reformation founder.
First there's the Men's Division's track record as an Einstein partner since 1961.
At Lincoln in 1946, Einstein told a campus-wide audience, "My trip to this institution was on behalf of a worthwhile cause.
Einstein, I think, would be pleased but not surprised.
As Millikan's comment on Chaplin suggests, Einstein and the Hollywood community were mutually star-struck, and Sinclair had his own connections with the film world.
Unable to find an academic job, Einstein went to work in 1902 in the Swiss patent office in Berne.
Einstein "had a transformative effect on the world," Galison adds, "because of his relentless pursuit of what the right principles should be.
Why is it,' Einstein asked a New York Times journalist in 1944, 'that nobody understands me and everybody likes me?
Earning re-designation in maternity care is a terrific acknowledgement of the commitment on the part of our doctors, nurses, technicians and staff, to provide the best care possible to our patients," says David Jaspan, DO, Chair of Obstetrics and Gynecology for Einstein Healthcare Network.
Director of the Einstein Center at the Hebrew University, Professor Hanoch Gutfreund, said, 'Through this exhibit viewers can discover more than just Einstein's scientific prowess, but also his humanitarian spirit.