The photoelectric effect is a phenomenon in which electrons are emitted from matter (metals and non-metallic solids, liquids or gases) as a consequence of their absorption of energy from...
The photoelectric effect is a phenomenom that occurs when you fire a photon with high enough energy aggainst matter, and it expells an electron after absorbing the photon's energy.
AFFECT is a verb, and means "to influence or change." EFFECT is a noun, and means the result, consequence, or change that is made. The two words are often confused, even moreso because effect can be...
The Photoelectric effect is when a photon (light particle) hits an atom and then the electrons jump off. When the photon comes out of the atom the electrons go back into the atom.