Towards the end of the war, when the outcome was unmistakable, Albert Einstein, who had been a friend of Warburg's father Emil, wrote Warburg at the behest of friends, asking him to leave the army and return to academia, since it would be a tragedy for the world to lose his talents.

Ten years later, Alexander Friedmann, a Russian cosmologist and mathematician, derived the Friedmann equations from Albert Einstein's equations of general relativity, showing that the Universe might be expanding in contrast to the static Universe model advocated by Einstein at that time.

Only a few months later, Karl Schwarzschild found a solution to Einstein field equations, which describes the gravitational field of a point mass and a spherical mass.

Louis de Broglie later ( 1924 ) showed in his doctoral dissertation that electrons are in fact much like photons in the respect that they act both as waves and as particles in a dual manner as Einstein had shown earlier for light.

Later, Albert Einstein proposed that the quanta of light might be regarded as real particles, and ( still later ) the particle of light was given the name photon, to correspond with other particles being described around this time, such as the electron and proton.

Einstein later expressed to Erwin Schrödinger that, " it did not come out as well as I had originally wanted ; rather, the essential thing was, so to speak, smothered by the formalism.

Einstein later declared the cosmological constant the biggest blunder of his life.

In 1917, Albert Einstein established the theoretical foundations for the laser and the maser in the paper Zur Quantentheorie der Strahlung ( On the Quantum Theory of Radiation ); via a re-derivation of Max Planck ’ s law of radiation, conceptually based upon probability coefficients ( Einstein coefficients ) for the absorption, spontaneous emission, and stimulated emission of electromagnetic radiation ; in 1928, Rudolf W. Ladenburg confirmed the existences of the phenomena of stimulated emission and negative absorption ; in 1939, Valentin A. Fabrikant predicted the use of stimulated emission to amplify “ short ” waves ; in 1947, Willis E. Lamb and R. C. Retherford found apparent stimulated emission in hydrogen spectra and effected the first demonstration of stimulated emission ; in 1950, Alfred Kastler ( Nobel Prize for Physics 1966 ) proposed the method of optical pumping, experimentally confirmed, two years later, by Brossel, Kastler, and Winter.

Albert Einstein later re-derived the transformation from his postulates of special relativity.

In 1905, Einstein explained certain features of the photoelectric effect by assuming that Planck's energy quanta were actual particles, which were later dubbed photons.

Based upon Max Planck's theory of black-body radiation, Einstein theorized that the energy in each quantum of light was equal to the frequency multiplied by a constant, later called Planck's constant.

" Five years later, Albert Einstein published his paper on special relativity, which challenged the very simple set of rules laid down by Newtonian mechanics, which had been used to describe force and motion for over two hundred years.

When it was found in 1900 by Max Planck that the energy of waves could be described as consisting of small packets or " quanta ", Albert Einstein further developed this idea to show that an electromagnetic wave such as light could be described as a particle ( later called the photon ) with a discrete quantum of energy that was dependent on its frequency.

Then, in 1905, to explain the photoelectric effect ( 1839 ), i. e., that shining light on certain materials can function to eject electrons from the material, Albert Einstein postulated, based on Planck ’ s quantum hypothesis, that light itself consists of individual quantum particles, which later came to be called photons ( 1926 ).

Einstein later famously derided entanglement as " spukhafte Fernwirkung " or " spooky action at a distance ".

A more mathematical statement of the Principle of Relativity made later by Einstein, which introduces the concept of simplicity not mentioned above is:

It was Einstein who later proposed that it is the electromagnetic radiation itself that is quantized, and not the energy of radiating atoms.

Einstein later referred to his failure to predict the expansion of the universe from theory, before it was proven by observation of the cosmological red shift, as the " biggest blunder " of his life.

Some of Mach's criticisms of Newton's position on space and time influenced Einstein, but later Einstein realized that Mach was basically opposed to Newton's philosophy and concluded that his physical criticism was not sound.

Six years later, Einstein would decline the offer of an honorary degree from Brandeis, writing to Brandeis president Abram L. Sachar that " what happened in the stage of preparation of Brandeis University was not at all caused by a misunderstanding and cannot be made good any more.

Giacconi's pioneering research continued in 1978 with the Einstein Observatory, the first fully imaging X-ray telescope put into space, and later with the Chandra X-ray Observatory, which was launched in 1999 and is still in operation.

Phonons are also necessary for understanding the lattice heat capacity of a solid, as in the Einstein model and the later Debye model.

Seconds later, Earth received the wave of radiation, where the powerful output of gamma rays inundated the detectors of three U. S. Department of Defense Vela satellites, the Soviet Prognoz 7 satellite, and the Einstein Observatory.

The inn was a popular stop for farmers going to the city's markets and later it sat near a horse racing track built by Aaron Einstein in 1868.

This solution had a peculiar behaviour at what is now called the Schwarzschild radius, where it became singular, meaning that some of the terms in the Einstein equations became infinite.

Working in relative isolation, he became the earliest theoretical scientist in the United States to earn an international reputation and was praised by Albert Einstein as " the greatest mind in American history.

Einstein also became alarmed by press announcements that exaggerated the school's success at fundraising, and on June 22, 1947 he made a final break with the enterprise.

In the 1930s, the university became a focal point for the Nazi crackdown on " Jewish physics ", as represented by the work of Albert Einstein.

Einstein had a lasting influence on Weyl who became fascinated by mathematical physics.

Lastly, in 1926, one year before the theory of quantum mechanics was published, Gilbert N. Lewis introduced the term " photon ", which soon became the name for Einstein ’ s light particle.

Einstein constructed a system in which both observations were either correct or approximately correct, by altering the equation for the Galilean transformation such that it became less accurate as speed approached the speed of light.

In addition, Landau became a pawn in a struggle for control of the University between Magnes and Chaim Weizmann and Albert Einstein.

At first, some in the scientific community called him an " eccentric dabbler ," but soon his laboratory became the meeting place for some of the most accomplished scientists of the time, such as Albert Einstein, Werner Heisenberg, Niels Bohr, James Franck, and Enrico Fermi.

In 1966 he moved to the State University of New York at Stony Brook and became the Albert Einstein Professor of Physics and the first director of a newly founded Institute for Theoretical Physics which is now known as C. N. Yang Institute for Theoretical Physics.

Many were invented ; some became established: circe chess, Madrasi chess, Andernach chess, monochromatic chess, patrol chess, Einstein chess and numerous others.

The solution of the Einstein field equations is valid for any mass M, so in principle ( according to general relativity theory ) a Schwarzschild black hole of any mass could exist if conditions became sufficiently favorable to allow for its formation.

She and Einstein became close friends quite soon.

Marić's academic career was disrupted in 1901 when she became pregnant by Einstein.

The marriage had been in difficulties since 1912, in the spring of which Einstein became reacquainted with his cousin Elsa Löwenthal ( née Einstein ), following which they began a regular correspondence.

* In 1994, Einstein became the only New York City medical school selected by the NIH to participate in the Women's Health Initiative, the largest research study of women's health ever undertaken.

* In 2006, Einstein became the only medical institution in the Northeast to serve as a research site for the Hispanic Community Health Study, the largest research study of Hispanic health ever conducted.

Gunther portrays his son as a remarkable young man – he corresponded intelligently with Albert Einstein about physics – and the heartbreak of his death is told so movingly by Gunther that the book became a best-seller, and in 1975 was made into an Emmy-nominated television movie starring Arthur Hill as John Gunther, Jane Alexander as his wife, and Robby Benson as Johnny.

Physicist Albert Einstein, born in Germany, moved to Switzerland in 1895 at the age of 16 and became a Swiss citizen in 1901.

He met and became friends with Albert Einstein, who encouraged him in learning classical music.

She became strongly associated in the 1930s with publicising the plight of German and Austrian Jews and even played a concert with the scientist Albert Einstein ( Alfred's cousin ) in 1934 to raise funds to bring Jewish scientists out of Germany.

After finishing his thesis with Felix Klein at the University of Göttingen in 1910, he became assistant at the Observatory in Berlin, where he became associated with Einstein.