That portion of an atom, which circles around the center, or nucleus. An electron possesses a negative electric charge, and is the smallest charge of electricity known.
Subatomic particle that has the smallest negative charge possible and usually found in an orbital of an atom, but gained or lost when atoms become ions.
An elementary particle of an atom with a negative electrical charge and a mass of 1/1837 of a proton; electrons surround the positively charged nucleus of an atom and determine ...
In quantum theory, the elemental unit of light, having both wave and particle behavior. It has motion, but no mass or charge. The photon energy (E) is proportional to the EM wave ...
The range of frequencies and wavelengths emitted by atomic systems. The total spectrum includes radio waves as well as short cosmic rays. Frequencies cover a range from 1 Hz to ...
A disturbance which propagates outward from an electric charge that oscillates or is accelerated. Includes radio waves; X rays; gamma rays; and infrared, ultraviolet, and visible ...
13 词条
