Einstein Online provides the user with a simple, but thorough, introduction to Einstein's Theory of Relativity. In the section 'Elementary Einstein', the theories of Special and General Relativity are explained in detail, going through concepts such as Relativity, Spacetime and Space Geometry. The following section, 'Spotlights on Relativity', contains applications of both theories, from the Relativity of Simultaneity, to Gravity and Gravitational Waves, to Black Holes and Cosmology, to the Quantum realm.
9-12: 10C/H1. As a young man, Albert Einstein, a German scientist, formulated the special theory of relativity, which brought about revolutionary changes in human understanding of nature. Among the counterintuitive ideas of special relativity is that the speed of light is the same for all observers no matter how they or the light source happen to be moving. In addition, nothing can travel faster than the speed of light.
9-12: 10C/H3. The special theory of relativity is best known for stating that any form of energy has mass, and that matter itself is a form of energy. Even a tiny amount of matter holds an enormous amount of energy. This relationship is described in the famous relativity equation E = mc2, in which the c in the equation stands for the immense speed of light.
9-12: 10C/H4. A decade after Einstein developed the special theory of relativity, he proposed the general theory of relativity, which pictures Newton's gravitational force as a distortion of space and time.
9-12: 10C/H5. Einstein's development of the theories of special and general relativity ranks as one of the greatest human accomplishments in all of history. Many predictions from the theories have been confirmed on both atomic and astronomical scales. Still, the search continues for an even more powerful theory of the architecture of the universe.
%0 Electronic Source %D May 30, 2007 %T Einstein Online %I Max Planck Institute for Gravitational Physics %V 2021 %N 19 January 2021 %8 May 30, 2007 %9 text/html %U https://www.einstein-online.info/
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