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11 hours ago · The photoelectric effect is the process in which electromagnetic radiation ejects electrons from a material. Einstein proposed photons to be quanta of electromagnetic radiation having energy \ (E=h\nu\) is the frequency of the radiation. All electromagnetic radiation is composed of photons. As Einstein explained, all characteristics of the ...
11 hours ago · These particles are known as photons, and they move at the speed of light. Any particle that moves at or near the speed of light has kinetic energy given by Einstein's special theory of relatively. In general, a particle of mass \(m\) and momentum \(p\) has an energy \[E=\sqrt{p^2 c^2+m^2 c^4} \label{1.6.2} \]
