The best Physics Articles, Glossary and sites on the web including quantum physics, relativity philosophy of physics and biographies of famous physicists. A resource for homework help, worked physics problems and examples, physics discussion board, Resources for science teachers, Experiments that anyone can carry out, Resources for Teachers, Physicists, Worked problems and examples, electromagnetism, thermodynamics, quantum mechanics, experiments, physics experiments, physics humor.
Saturday, February 18, 2006
photon
Definition: A particle with zero rest mass consisting of a quantum of electromagnetic radiation. The photon may also be regarded as a unit of energy equal to hf, where h is the Planck constant and f is the frequency of the radiation in hertz. Photons travel at the speed of light. They are required to explain the photoelectric effect and other phenomena that require light to have particle character.
No comments:
Post a Comment