[al-bert;; German ahl-bert] /ˈæl bərt;; German ˈɑl bɛrt/ (Show IPA), 1879–1955, German physicist, U.S. citizen from 1940: formulator of the theory of relativity; Nobel Prize 1921.
[al-frid;; German ahl-fret] /ˈæl frɪd;; German ˈɑl frɛt/ (Show IPA), 1880–1952, German musicologist in U.S.
(lowercase) Physics, Chemistry. a unit of radiant energy, equal to the energy of radiation that is capable of photochemically changing one mol of a photosensitive substance.
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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
German-born American theoretical physicist whose theories of Special Relativity (1905) and General Relativity (1916) revolutionized modern thought on the nature of space and time and formed a theoretical base for the exploitation of atomic energy. He won the 1921 Nobel Prize for physics for his explanation of the photoelectric effect.
Our Living Language : By around 1900, the increased precision of new measuring instruments had shown that the laws of motion and gravity established by Galileo and Newton were unable to explain certain phenomena. The observed orbit of Mercury, for example, differed slightly from that predicted by Newton, and laws describing the motion of electromagnetic waves left many electrical effects unexplained. In 1905, an unknown 26-year-old patent office clerk named Albert Einstein published four papers that not only solved these problems, but revolutionized physics. The first two presented his Special Theory of Relativity, which departed from the classical Newtonian concepts of space and time in its assertion that all reference frames (all coordinate systems) do not measure space and time equivalently. That is, space and time are not the same throughout the universe, but depend on the motion of the observer. But for Einstein, not everything was relative. Following the electromagnetic theory of Maxwell, Einstein argued that the speed of light is the same for all observers, and introduced a new concept of space-time to reconcile this with concepts of relative motion. He also introduced the famous equation expressing a direct relation between mass and energy, E = mc2, known as mass-energy equivalence. A third paper analyzed electromagnetic radiation such as light in terms of particles called photons, and explained how some substances, when exposed to such radiation, eject electrons in a quantum process called the photoelectric effect. A fourth paper explained the random movement of particles suspended in a fluid, now known as Brownian motion. In 1916, in his General Theory of Relativity, Einstein described gravity as a warping of space-time (as opposed to Newton’s force) caused by the mere presence of objects possessing mass. Einstein’s new conception of gravity correctly predicted Mercury’s observed orbit, and his work on photons led to a more accurate description of electromagnetic radiation. In his later years, Einstein devoted himself to a search for a theory that would unify gravity with the other three fundamental forces in nature: the strong force, the electromagnetic force, and the weak force. This search is still ongoing.
Herbert Vere [veer] /vɪər/ (Show IPA), 1894–1966, Australian lawyer and statesman: president of the General Assembly of the United Nations 1948–49. noun Herbert Vere. 1894–1965, Australian jurist and Labor political leader, president of the General Assembly of the United Nations 1948–49
- Albert bacon fall
Albert Bacon, 1861–1944, U.S. politician: senator 1912–21; secretary of the Interior 1921–23; convicted in Teapot Dome scandal. verb (mainly intransitive) falls, falling, fell (fɛl), fallen (ˈfɔːlən) to descend by the force of gravity from a higher to a lower place to drop suddenly from an erect position to collapse to the ground, esp in pieces […]
Albert, 1761–1849, U.S. statesman: Secretary of the Treasury 1801–13. a town in N Tennessee. a river in NW Wyoming and SW Montana, flowing NW to join the Jefferson and Madison rivers in forming the Missouri River. 120 miles (193 km) long. Historical Examples The Life of Albert Gallatin Henry Adams Albert Gallatin John Austin Stevens […]
- Herbert spencer gasser
Herbert Spencer, 1888–1963, U.S. physiologist: Nobel Prize in Medicine 1944. noun a drilling or well that yields natural gas noun Herbert Spencer. 1888–1963, US physiologist: shared a Nobel prize for physiology or medicine (1944) with Erlanger for work on electrical signs of nervous activity gasbag (1912+) Anything or anyone exceptionally amusing, effective, memorable, etc; a […]