Any list of the greatest thinkers in history contains the name of the brilliant physicist Albert Einstein. His
theories of relativity led to entirely new ways of thinking about time, space, matter, energy, and gravity. Einstein's work led to such scientific advances as the control of atomic energy, even television as a practical application of Einstein's work. In 1902 Einstein became an examiner in the Swiss patent office at Bern. In 1905, at age 26, he
published the first of five major research papers. The first one provided a theory explaining Brownian movement,the zig-zag motion of microscopic particles in suspension. The second paper laid the foundation for the photon, orquantum, theory of light. In it he proposed that light is composed of separate packets of energy, called quanta or
photons, that have some of the properties of particles and some of the properties of waves. A third paper contained
the "special theory of relativity" which showed that time and motion are relative to the observer, if the speed of light is constant and the natural laws are the same everywhere in the universe. The fourth paper was a mathematical
addition to the special theory of relativity. Here Einstein presented his famous formula, E = m(cc), known as the
energy mass equivalence. In 1916, Einstein published his general theory of relativity. In it he proposed that gravity
is not a force, but a curve in the space-time continuum, created by the presence of mass. Einstein spoke out
frequently against nationalism, the
exalting
of one nation above all others. He opposed war and violence and
supported Zionism, the movement to establish a Jewish homeland in Palestine. When the Nazis came to power in
1933, they denounced his ideas. He then moved to the United States. In 1939 Einstein learned that two German
chemists had split the uranium atom. Einstein wrote to President Franklin D. Roosevelt warning him that this
scientific knowledge could lead to Germany developing an atomic bomb
.
He suggested the United States begin its
own atomic bomb research.
Question 46:
Einstein's primary work was in the area of
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