TIA's Glossary of Telecommunication Terms
0-9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
Planck's law
The fundamental law of quantum theory that describes the essential concept of the quanta of electromagnetic energy. Note 1: Planck's law states that the quantum of energy, E , associated with an electromagnetic field is given by E = h
, where h is Planck's constant and is the frequency of the electromagnetic radiation. Note 2: Planck's constant is usually given in joule•seconds and the frequency in hertz. Thus, the quantum of energy is usually given in joules. Note 3: The product of energy and time is sometimes referred to as the elementary quantum of action. Hence, h is sometimes referred to as the elementary quantum of action.