The photoelectric effect is the emission of electrons from a material caused by electromagnetic radiation such as ultraviolet light. Electrons emitted in this manner are called photoelectrons. The phenomenon is studied in condensed matter physics, solid state, and quantum chemistry to draw inferences about the properties of atoms, molecules and solids. The effect has found use in electron. Emission mechanismThe photons of a light beam have a characteristic energy, called, which is proportional to the frequency of the light. In the photoemission process, when an electron within some material absorbs the energy. In 1839, discovered the related while studying the effect of light on. Though not equivalent to the photoelectric effect, his work on was. These are extremely light-sensitive vacuum tubes with a coated inside the envelope. The photo cathode contains combinations of materials such as cesium, rubidium, and antimony specially selected to provide.
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