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Alexandrite

Tsarstone collectors guide


Quantum

Quantum
Quantum of light or electromagnetic radiation, it can behave as a wave or as a particle. Traveling at the velocity of light. Photon have momentum but not mass or electrical charge. Also known as light quantum. Caused by excitation of atoms and molecules and more energetic ones can cause ionization. A sample for a quantum: when one gram sand corn swinging as a pendulum, one swing per second and rising one cm during each swing which has an energy of about 0.0001 Joule, this swinging corn contains about 150 x 10(27) quanta of energy.
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