Difference between revisions of "Albert Einstein"

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(Quotes: quotes that have been attributed to Einstein)
(This can be moved to an article about E=mc2. As it stands now, it has nothing to do with Einstein (it describes what relationship he did NOT have with the equation, rather irrelevant to this article))
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Einstein’s famous formula E=mc<sup>2</sup> says that mass and energy can turn into each other. It was first published by H. Poincare. Einstein published an alternate derivation that was corrected and improved by M. Planck. E stands for [[energy]], m is [[mass]], and c is the [[speed of light]]. So, if you increase the energy of a substance, for example by heating it, it gains a minute amount of mass. It was later realized that if you split an atom apart, as in a nuclear explosion, it loses a tiny amount of mass and you release a huge amount of [[energy]]. 
Einstein’s famous formula E=mc<sup>2</sup> says that mass and energy can turn into each other. It was first published by H. Poincare. Einstein published an alternate derivation that was corrected and improved by M. Planck. E stands for [[energy]], m is [[mass]], and c is the [[speed of light]]. So, if you increase the energy of a substance, for example by heating it, it gains a minute amount of mass. It was later realized that if you split an atom apart, as in a nuclear explosion, it loses a tiny amount of mass and you release a huge amount of [[energy]].
The connection E=mc<sup>2</sup> to nuclear energy is not as direct as pop culture sometimes represents. Einstein did not discover the huge energy available from nuclear reactions. Early workers in radioactivity, such as Ernest Rutherford, understood clearly that the natural radioactive decay of radium released quantities of energy that could not be explained by chemistry, and were much larger than those of chemical reactions. Neither did Einstein originate the key idea that made nuclear energy a possible weapon or a practical energy source. That was Leo Szilard, who acknowledged having been inspired by a 1914 H. G. Wells novel. Szilard discovered or invented the chain reaction (and patented it). However, other people recognized the relation between Einstein's interpretation of the E=mc<sup>2</sup> formula and chain reactions. Einstein explained that matter releasing energy is also losing mass.
Energy binds together the parts of an [[atom]], including the [[nucleus]]. The nucleus of an atom is tiny, but very little mass could release a huge amount of energy. When one nucleus splits apart, it splits other nuclei around it. This is called a [[chain reaction]].
===Cosmological Constant===
===Cosmological Constant===

Revision as of 04:13, 4 August 2009

600px-Albert Einstein Head.jpg

Albert Einstein (1879-1955) was the most famous physicist of the 20th century. He was born in Ulm, in Württemberg, Germany in a Jewish family. During his stay at the Swiss Patent Office Einstein produced much of his remarkable work. In 1905 he obtained his doctor's degree. He won the Nobel Prize for his work on the Photoelectric Effect in 1921. [1] Einstein immigrated to the United States in the late 1930s to take the position of Professor of Theoretical Physics at Princeton; upon the urging of a colleague in physics, recommended that President Franklin D. Roosevelt develop an atomic bomb project. [2] He later regretted this and became a passionate pacifist. In 1952, he was offered the Presidency of Israel, but he turned it down. Einstein collaborated with Dr. Chaim Weizmann in establishing the Hebrew University of Jerusalem. Albert Einstein died on April 18, 1955 at Princeton, New Jersey at the age of 76.


  • In 1898, young Albert Einstein applied for admission to the Munich Technical Institute and was turned down. The young man, the Institute declared, "showed no promise" as a student. By 1905, he had formulated his special theory of relativity. [3]
  • Einstein came to Princeton University in 1935 and was asked what he would require for his study. he replied: "A desk, some pads and a pencil, and a large wastebasket to hold all of my mistakes." [4]
  • The sculptor Jacob Epstein tells this story:
    "When I was doing Professor Albert Einstein's bust he had many a jibe at the Nazi professors, one hundred of whom had condemned his theory of relativity in a book. 'Were I wrong,' he said, 'one professor would have been enough.' [5]


Einstein contributed to the theory of a Special Relativity and the theory of General Relativity. He also contributed to the study of Photoelectric Effect, Brownian Motion and Bose-Einstein Statistics. He was critical of quantum mechanics and has proposed the EPR-Paradox in attempt to point out spooky aspects of the theory. The last fifteen years of his life were spent in unsuccessfully searching for a Unified Field Theory. Einstein's best-known scientific work is his 1905 papers on Special Relativity. The theory of relativity had already been published by Hendrik Lorentz and Henri Poincaré. Einstein's contribution was to give a description of the Lorentz-Poincare theory without reference to the luminiferous aether, and to clarify some of the physical consequences of the theory.

Einstein then wrote a series of papers applying relativity to gravity using the mathematics of Riemannian Geometry, resulting in General Relativity. Much of the actual mathematics of general relativity was worked out by Marcel Grossman, David Hilbert, and others. Einstein's main contribution was to give an alternate derivation of the field equations, and to apply them to explain an anomaly in the advance of the perihelion in Mercury's orbit. Arthur Eddington popularized General Relativity by publishing an explanation of it and by attempting to prove the theory experimentally in a dramatic test. Eddington embarked on a highly publicized trip into the Atlantic Ocean off Africa in order to observe the bending of starlight passing nearby the Sun during the total solar eclipse of May 29, 1919. Eddington returned with a declaration that he had proven Einstein's theory of General Relativity, making Einstein extremely famous[6], when in fact he had selectively used data to attain this result. No Nobel Prize was given for relativity.

In April 2004, NASA launched the satellite Gravity Probe B to test general relativity. The main purpose was to test relativistic frame dragging, but the results have been inconclusive.

Einstein compared the effects of large objects on space and time to the way that a large ball placed on a sheet of rubber stretches the material and causes it to sag, and drew the analogy with the way stars and planets warp space-time. A smaller ball rolling along the sagging fabric will be drawn towards the larger ball, in the same way that the Earth is drawn towards the sun, but will not fall into it as long as it continues to move at sufficient speed. This was a change in thinking from the Newtonian cosmos, in which gravity was viewed purely as an attractive force between bodies.

Einstein's statistical explanation of Brownian motion (the random movement of microscopic particles mixed in with pollen) helped confirm the atomic theory at a time when some scientists argued against it.[7] Most scientists had accepted atomic theory a century earlier.

Einstein also published a heuristic explanation of the photoelectric effect in which light has particle like properties as well as wave like properties. According to Maxwell's equations, light is a wave so one might expect that increasing the intensity of light should increase the number of electrons emitted from metal. The German physicist Lénard did an experiment proving that this was not true. Einstein argued that the experiment was consistent with Max Planck's hypothesis that light is quantized and different particles of light or photons have different frequencies. Therefore, increasing the intensity of low frequency photons has no effect, while using a higher (blue or ultra violet) frequency of light does cause more electrons to be emitted. The formula Einstein used to explain this was Planck's formula e = hf, where h is Planck's constant and f is the frequency.[14]

Although Einstein won a Nobel Prize for explaining the photoelectric effect, Lénard was bitter and wrote antisemitic books claiming that German physics was superior to the Jewish physics of Einstein.[8] Planck and Lénard also received Nobel Prizes for related work.

Einstein also recognized the value in work done by the physicist Bose when others did not, and helped Bose develop what is now referred to as Bose-Einstein statistics. A simplified explanation is that the statistics for bosons (including light) are different from the statistics for fermions which make up solid matter in that there is no way to tag or differentiate one boson from another for statistical comparisons.


Einstein’s famous formula E=mc2 says that mass and energy can turn into each other. It was first published by H. Poincare. Einstein published an alternate derivation that was corrected and improved by M. Planck. E stands for energy, m is mass, and c is the speed of light. So, if you increase the energy of a substance, for example by heating it, it gains a minute amount of mass. It was later realized that if you split an atom apart, as in a nuclear explosion, it loses a tiny amount of mass and you release a huge amount of energy.

Cosmological Constant

Einstein revised his work on General Relativity to include a 'fudge-factor' which he termed the Cosmological Constant. He was trying to account for the apparent steady-state nature of the universe.

Edwin Hubble, in whose name NASA's famous Hubble Space Telescope is named, later convinced him otherwise. At one point he had Einstein actually making direct observations alongside him, and Hubble's findings showed conclusively that the universe was indeed expanding, as predicted by certain solutions of GR's field equations in the absence of a cosmological constant. Einstein recanted his original philosophy, and accepted as true the notion of a changing universe having a definite beginning.

He later said of his Cosmological Constant, "It was the biggest blunder of my life."

An interesting end-note on this term: Principle investigators from Princeton University first published findings in 1998 apparently revealing an accelerating expansion for the universe[9]. Because this initially seemed like it might be a sort of 'anti-gravity' effect (similar in concept to Einstein's original notion), it briefly became quite popular for scientists to dub the phenomenon the 'Cosmological Constant' as well. For more information, see: Dark Energy.


  • Special Theory of Relativity (1905)
  • Relativity (English translations, 1920 and 1950)
  • General Theory of Relativity (1916)
  • Investigations on Theory of Brownian Movement (1926)
  • The Evolution of Physics (1938)
  • About Zionism (1930)
  • Why War? (1933),
  • My Philosophy (1934)
  • (The World As I See It) (1934)
  • Out of My Later Years (1950)

...the daily effort comes from no deliberate intention or program, but straight from the heart.


Einstein received honorary doctorate degrees in science, medicine and philosophy from many American and European universities.

He won the Nobel Prize in 1921 for his work on the Photoelectric Effect.

  • "It strikes me as unfair, and even in bad taste, to select a few individuals for boundless admiration, attributing superhuman powers of mind and character to them. This has been my fate, and the contrast between the popular assessment of my powers and achievements and the reality is simply grotesque." [10]

Einstein told a friend in 1930, "To punish me for my contempt of authority, Fate has made me an authority myself." [11]

He gained the Copley Medal of the Royal Society of London in 1925 and the Franklin Medal of the Franklin Institute in 1935.

Einstein was offered the presidency of Israel in 1952 [12] but respectfully declined because he believed his life-long scientific attitude of objectivity made him an inappropriate candidate for such a high political position, he was also strongly opposed to nationalism.

In 1999, he was named "Person of the Century" by "Time" magazine.

Einstein and the A-bomb

In 1939 research done by several leading scientists including Enrico Fermi regarding chain reactions of nuclear fission prompted Leo Szilard to persuade Einstein to write a letter to President [13], to warn the President about the possibility of nuclear weapons and that Nazi Germany had already taken an interest in this technology.

Einstein himself had never been involved in the Manhattan project. He was considered a security risk, as he was a member, sponsor, or affiliated with thirty-four communist fronts between 1937 and 1954.[14] Later he condemned the use of nuclear weapons.

Controversy Surrounding His Death

Dr. Thomas Stoltz Harvey, then a pathologist, performed the autopsy on Einstein in the Princeton Medical Center several hours after his death. Upon completion, Dr. Harvey removed the brain and eyes [15]. There is controversy about whether or not Harvey had consent from the Einstein family to remove the brain and keep it, though letters from Otto Nathan, executor of the Einstein estate, suggest that Harvey did indeed have permission to keep the brain, as long as research performed on it was only described in scientific journals.

The brain was photographed and sliced into 240 pieces in order to be preserved and further studied. Harvey hoped some uniqueness would be discovered that distinguished Einstein's brain as "genius".

Although he sent pieces away for further study, the bulk of the brain remained with Harvey for over 40 years. His once-ambitious plans for doing research on Einstein's brain were never actualized, though there were at least two controversial studies performed which suggested a physical reason for Einstein's intelligence. In 1996 Harvey entrusted Elliot Krauss, cheif pathologist at the Princeton Medical Center, with the brain. The brain now sits in a secret location, possibly only a few feet away from where it was first removed from Einstein's head. Krauss loans out pieces of the brain for scientific research, but he is very discriminating in deciding whom shall receive a piece. [16]

Religious views

Einstein wearing a kippah in a Berlin Synagogue, 1930.

There is some controversy surrounding the religion of Albert Einstein.

He explained his religious views to Time Magazine in this manner:
“I'm not an atheist. I don't think I can call myself a pantheist. The problem involved is too vast for our limited minds. We are in the position of a little child entering a huge library filled with books in many languages. The child knows someone must have written those books. It does not know how. It does not understand the languages in which they are written. The child dimly suspects a mysterious order in the arrangement of the books but doesn't know what it is. That, it seems to me, is the attitude of even the most intelligent human being toward God. We see the universe marvelously arranged and obeying certain laws but only dimly understand these laws." [17]

Einstein also said

"In view of such harmony in the cosmos which I, with my limited human mind, am able to recognise, there are yet people who say there is no God. But what makes me really angry is that they quote me for support of such views."[18],

"The fanatical atheists, are like slaves who are still feeling the weight of their chains which they have thrown off after hard struggle. They are creatures who--in their grudge against traditional religion as the 'opium of the masses'-- cannot hear the music of the spheres."[19]

"God does not play dice with the universe."[20]


"Science without religion is lame. Religion without science is blind" [21]

"The word god is for me nothing more than the expression and product of human weaknesses, the Bible a collection of honourable, but still primitive legends which are nevertheless pretty childish. No interpretation no matter how subtle can (for me) change this."[22]

"It was, of course, a lie what you read about my religious convictions, a lie which is being systematically repeated. I do not believe in a personal God and I have never denied this but have expressed it clearly. If something is in me which can be called religious then it is the unbounded admiration for the structure of the world so far as our science can reveal it."[23]

Taken as a whole, it appears Einstein rejected the literal stories of God's personal involvement with the Hebrews, but he did believe in the existence of a higher power.

Views On Judaism and Zionism

Einstein with David Ben-Gurion.

In 1920, in a letter to the Central Association of German Citizens of the Jewish Faith, Einstein wrote

"I am neither a German citizen, nor is there in me anything that can be described as ‘Jewish faith.’ But I am happy to belong to the Jewish people, even if I do not consider them in any way God's elect."

Einstein do not view fellow Jews as co-religionists, but as tribal companions. Einstein was made an honorary citizen of Tel Aviv during his visit in 1923. In 1952, Einstein was offered the position of president of Israel by the 1st prime minster of Israel David Ben-Gurion, but declined the offer. Before his death in 1955, Einstein wrote to the Zionist leader Kurt Blumenfeld:

"I thank you, even at this late hour, for having made me conscious of the Jewish soul."

Einstein willed that all his scholarly work be archived in Israel's Hebrew University after his death.

Whatever his views on Zionism were, Einstein has always expressed his anti-war views and staunchly opposed nationalism:

"He who joyfully marches to rank and file, has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would surely suffice. This disgrace to civilization should be done away with at once. Heroism on command, how violently I hate all this, how despicable and ignoble war is; I would rather be torn to shreds than be a part of so a base of action. It is my conviction that killing under the cloak of war is nothing but an act of murder."

Einstein on Germany and the rise of Hitler

In 1944, in a message to a bulletin run by Polish Jews in New York, Einstein wrote

The Germans as an entire people are responsible for the mass murders and must be punished as a people if there is justice in the world and if the consciousness of collective responsibility in the nations is not to perish from the earth entirely. Behind the Nazi party stands the German people, who elected Hitler after he had in his book [Mein Kampf] and in his speeches made his shameful [genocidal] intentions clear beyond the possibility of misunderstanding.

Unsupported attributions

Many ideas and quotes are falsely attributed to Einstein. He did not invent very much of we now call special relativity. The Principle of Relativity, that the law of physics should be the same in all inertial frames, had already been published before Einstein.[24] He did not discover the Lorentz transformation, or the Lorentz invariance of Maxwell's equations for electromagnetism.[25] He was not the first to propose that the speed of light is constant for all observers, or that "the aether" is superfluous and not observable.[26] He was not the first to recognize and explain how special relativity causes an ambiguity in defining simultaneity.[27] He did not combine space and time into a four-dimensional spacetime in his special relativity papers until others had been doing it for a couple of years.

Einstein did not invent the term "relativity theory", and did not even like the term. He called it the "so-called relativity theory" until 1911. Einstein did not banish the ether from Physics. In a 1920 lecture, he said, "More careful reflection teaches us, however, that the special theory of relativity does not compel us to deny æther."[28]

Einstein was not the first to observe the equation E=mc2 as a consequence of special relativity,[29] or to foresee its application to nuclear binding energies or antimatter annihilation. Einstein only published faulty and incomplete proofs.[30][31] He did not foresee a nuclear chain reaction and had to be persuaded about the possibility of an atomic bomb. However, Einstein's interpretation of the E=mc2 equation was fairly popular. According to Einstein, a body losing energy through heat or radiation was losing mass.[32]

Einstein did not originate the idea of using non-Euclidean geometry[33] metric tensors to reconcile gravity with special relativity.[34] It was not his idea to describe gravity in covariant equations, and he published papers supposedly showing that it was impossible.[35] He did not discover the Lagrangian formulation of general relativity, and was not the first to publish the field equations. He did not foresee the expansion of the universe (although this expansion is consistent with the field equations), the possibility of black holes, or dark energy.

Einstein did not prove that matter was made of atoms. That had been known for a century when Einstein published his 1905 paper on Brownian motion.

Einstein never developed a unified field theory of any significance. He published papers on quantum mechanics, but always insisted on a deterministic interpretation.

Many quotes are falsely attributed to Einstein. Here are a few. "If the bee disappeared off the surface of the globe then man would only have four years of life left." "We use only 10% of our brains." "Evil is simply the absence of God." "Originality is the art of concealing your sources."


Here are some quotes that have been attributed to Einstein, but which have not been verified.

  • The difference between stupidity and genius is that genius has its limits.[36]
  • Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning. [37]
  • "Whoever is careless with the truth in small matters cannot be trusted with important matters." [38]

External Links


  1. http://nobelprize.org/nobel_prizes/physics/laureates/1921/
  2. [1]
  3. http://oaks.nvg.org/sa5ra17.html
  4. http://oaks.nvg.org/sa5ra17.html
  5. http://oaks.nvg.org/sa5ra17.html
  6. On November 8, 1919, for example, the London Times had an article headlined: "The Revolution In Science/Einstein Versus Newton." Two days later, The New York Times' headlines read: "Lights All Askew In The Heavens/Men Of Science More Or Less Agog Over Results Of Eclipse Observations/Einstein Theory Triumphs." [2]
  7. Einstein on Brownian Motion
  8. Richard J. Evans, The Third Reich in Power, pages 306-309
  9. http://map.gsfc.nasa.gov/m_mm.html
  10. http://www.infinite-energy.com/iemagazine/issue38/einstein.html
  11. http://www.infinite-energy.com/iemagazine/issue38/einstein.html
  12. [3]
  13. Roosevelt [4]
  14. http://foia.fbi.gov/foiaindex/einstein.htm
  15. NPR, [5]
  16. Abraham, Carolyn. Possessing Genius. Icon Books Ltd (2005)
  17. http://www.time.com/time/printout/0,8816,1607298,00.html
  18. http://www.amazon.com/Einstein-Life-Universe-Walter-Isaacson/dp/0743264738
  19. http://www.amazon.com/Einstein-Life-Universe-Walter-Isaacson/dp/0743264738
  20. http://www.quotedb.com/quotes/878
  21. http://www.amazon.com/Einstein-Life-Universe-Walter-Isaacson/dp/0743264738
  22. http://www.guardian.co.uk/science/2008/may/12/peopleinscience.religion
  23. as quoted in "Albert Einstein - The Human Side", Selected and Edited by Helen Dukas and Banesh Hoffman, Princeton University Press, 1979 from a letter on March 24th, 1954
  24. [6]
  25. [7]
  26. Lost in Einstein's Shadow, American Scientist, 2006. [8]
  27. [9]
  28. Quoted by Tulane astrophysicist Frank J. Tipler, http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1271310
  29. H. Poincare published it in 1900. [10]
  30. Einstein's Mistakes: The Human Failings of Genius, by Hans C. Ohanian, http://www.amazon.com/Einsteins-Mistakes-Human-Failings-Genius/dp/0393062937
  31. http://discovermagazine.com/2008/sep/01-einstein.s-23-biggest-mistakes
  32. Einstein, A., 1905, Ist die Trägheit eines Körpers von dessen Energieinhalt abhängig?, Annalen der Physik, volume 18, pages 639–643. See also English translation.
  33. His friend Paul Ehrenfest pointed out the need for curved space. [11]
  34. [12]
  35. [13]
  36. And I Quote - Genius Page 146 by By Ashton Applewhite, William R. Evans, Tripp Evans, Andrew Frothingham
  37. A vision of transdisciplinarity : laying foundations for a world knowledge by Frédéric Darbellay, Moira Cockell, Jerome Billotte
  38. Albert Einstein: historical and cultural perspectives : the centennial - Page 388 by Gerald James Holton
  • "The Nobel Prize in Physics 1921"[15]
  • "On The Electrodynamics Of Moving Bodies"[16]
  • "Does The Inertia Of A Body Depend Upon Its Energy-Content?"[http://www.fourmilab.ch/etexts/einstein/E_mc2/e_mc2.pdf
  • Michael Paterniti, Driving Mr. Albert: A Trip Across America With Einstein's Brain
  • "Collected Quotes from Albert Einstein" [17]
  • "Confusion regarding Einstein's Religion"[18]