Photoelectric Effect

  • Light can be thought as particles (photons), and electrons can be ejected if each proton has enough energy.

  • Each photon carries a specific amount of energy determined by its frequency

  • The minimum needed to eject electrons is known as the Work Function (Φ)/threshold. If it meets the (Φ), kinetic energy (K.E.) is released, and more E means more K.E. released to the electron/

  • The sum of the (Φ) & K.E. of an ejected electron is proportional to the frequency of incident light.

    • E = hv = Ethreshold + K.E.

  • Light is a wave & particle

  • More E means more electrons release, so it’s dependent on the freuqncy amount (applies to speed they emit too)

  • low eV on high Ev means nothing, and vice versa