what is the reason to failure of classical physics
Answers
When a small tube of hydrogen gas is heated, it begins to glow and emit light. Unlike the blackbody radiation that comes from a hot dense solid or gas, this light consists of just a few colors (wavelengths): a red wavelength, a turquoise, and several violets. Classical physicists at the beginning of the century thought they should certainly be able to understand hydrogen, since it is the simplest atom. Hydrogen consists of a positively charged proton at the center, with a negatively charged electron orbiting around it. The electrical attraction between the positive proton and the negative electron keeps the electron in orbit, just like the gravitational attraction between the Sun and the Earth holds the Earth in orbit. There was just one problem. Classical physics said that because the orbiting electron is constantly changing direction, it should emit electromagnetic radiation --- light. As a result, the electron should be continually losing energy. In fact, physicists calculated that the electron should lose all of its energy and spiral down into the proton in only about1 second! In other words, atoms should not exist longer than a mere 10-12 seconds.
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