Pluto’s ice mountains, frozen plains and layers of atmospheric haze backlit by a distant sun, as seen by the New Horizons spacecraft.
📸: NASA/JHUAPL/SwRI
The photoelectric effect occurs when light strikes a material and ejects electrons from its surface. It revealed that light behaves as particles (photons) with energy ( E = h f ), where ( h ) is Planck's constant and ( f ) is the frequency. This discovery, explained by Einstein, revolutionized physics and confirmed quantum theory. ✍️