Photoelectric effect

One scientist's quest to make solar energy available when and where we need it - without the bulk of a battery.

Physics classes on Instagram: "When light shines on a metal, electrons can be ejected from the surface of the metal in a phenomenon known as the photoelectric effect. This process is also often referred to as photoemission, and the electrons that are ejected from the metal are called photoelectrons. In terms of their behavior and their properties, photoelectrons are no different from other electrons. •Based on the wave model of light, physicists predicted that increasing light amplitude…

Photoelectric effect occurs when a light with sufficient energy is shined on the surface of a metal and ejects electrons from the atom.

The idea of Newton that light is a stream of light particles was thoroughly refuted by Young and Fresnel followed by Maxwell in the 19th century, but then surprisingly reappeared in the beginning of the 20th century in the work by Planck on blackbody radiation followed by Einstein's formula for the photoelectric effect presented in his 1905 article On a Heuristic Viewpoint Concerning the Production and Transformation of Light: P + W = E with E = h f , where P is the kinetic energy of an…

From Einstein's first publication to Einstein's Nobel Prize, read about one of the major steps in developing quantum mechanics.

photoelectric effect | Photoelectric Effect - Radiation Oncology Blog

The photoelectric effect occurs when photoelectrons are ejected from a metal surface in response to monochromatic radiation incident on the surface. It has three characteristics: (1) it is instantaneous, (2) it occurs only when the radiation is above a cut-off frequency, and (3) kinetic energies of photoelectrons at the surface do not depend of the intensity of radiation. The photoelectric effect cannot be explained by classical theory.

Photoelectric Effect - Download as a PDF or view online for free