Early Photoelectric Effect Data Electrons ejected from a sodium metal surface were measured as an electric current. Finding the opposing voltage it took to stop all the electrons gave a measure of the maximum kinetic energy of the electrons in electron volts. . The minimum energy required to eject an electron from the surface is called the photoelectric work function.Einstein's Photoelectric Equation Einstein looked at the way in which electrons tried to leave the metal. He established that it actually takes energy for an electron to leave the surface of the metal. He called this energy the work function, . work function photoelectric effect equation
Though not equivalent to the photoelectric effect, his work on photovoltaics was instrumental in showing a strong relationship between light and Einstein wrote an equation for the photoelectric effect that agreed with experimental results. the work function of a sample can be determined by bombarding it with a monochromatic X
: an equation in physics giving the kinetic energy of a photoelectron emitted from a metal as a result of the absorption of a radiation quantum: E k h where E k is the kinetic energy of the photoelectron, h is the Planck constant, is the frequency associated with See also Work Function wiki. According to a Washington State University posting, the values for K (2. 29) and Na(2. 36) are for polycrystalline samples. Photoelectric Experimentwork function photoelectric effect equation How can the answer be improved?
The above two observation can only be explained if the electromagnetic waves are emitted in packets of energy (quanta) called photons, the photoelectric effect can only be explained by the particle behaviour of light. The photoelectric equation involves; h the Plank constant 6. 63 x 1034 J s; f the frequency of the incident light in hertz (Hz) work function photoelectric effect equation Feb 23, 2015 Following on from the previous video about the photoelectric effect this describes the work function of a material and the threshold frequency, all neatly tidied up in Einstein's photoelectric The photoelectric effect is the most important interaction of lowenergy photons with matter. In this effect a photon of energy h\nu is absorbed by an atom and an electron of particular energy is ejected.