A magnetic analogue of this phenomenon has been recently discovered by Oliveira and Rand.
A magnetic analogue of this phenomenon has been recently discovered by Oliveira and Rand. Philipp Lenard discovered that it can cause a sheet of zinc to gain a positive charge, and the minimum value of a certain quantity in order for this phenomenon to occur can be found by dividing the work function by Planck's constant. This phenomenon was first discovered when (*) ultraviolet light was shined on a spark gap by Heinrich Hertz, and Einstein won a Nobel Prize by explaining that it is due to the particle nature of light. For ten points, identify this effect in which objects emit electrons as they absorb high-energy photons.
A magnetic analogue of this phenomenon has been recently discovered by Oliveira and Rand.
{photoelectric} effect (or {Hertz} effect before mentioned)