For ten points, name this effect in which shining light on a metal facilitates the ejection of electrons from its surface.
A plot of current from this phenomenon against potential difference yields curves at different intensities that converge to a stopping potential at some negative applied voltage, measuring the energy of the fastest electron. Since no detectable time lag has ever been measured and the kinetic energy is independent of light intensity, the explanation for this effect must rely on a characteristic cutoff frequency, the product of which with Planck's constant equals the work function, the minimum energy needed by an electron to escape the forces that bind it to a metal surface. For ten points, name this effect in which shining light on a metal facilitates the ejection of electrons from its surface.
A plot of current from this phenomenon against potential difference yields curves at different intensities that converge to a stopping potential at some negative applied voltage, measuring the energy of the fastest electron.
{photoelectric} effect