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AMA style

David Weinberg. "Definition of Quantum". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 04:45 UTC. Available at: http://m.alexandrite.net/viewpage.html?id=GG-102-00001. Accessed April 03, 2026.

APA style

"Definition of Quantum". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 15:36, April 03, 2026, from http://m.alexandrite.net/viewpage.html?id=GG-102-00001.

Bluebook style

"Definition of Quantum", http://m.alexandrite.net/viewpage.html?id=GG-102-00001 (last visited April 03, 2026).

Bluebook: Harvard JOLT style

See Alexandrite Tsarstone Collectors Guide, "Definition of Quantum", http://m.alexandrite.net/viewpage.html?id=GG-102-00001 (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.) (as of Apr. 03, 2026, 15:36 GMT).

CBE/CSE style

David Weinberg. "Definition of Quantum". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 04:45 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 04:45 UTC [cited 2026 Apr 03]. Available from: http://m.alexandrite.net/viewpage.html?id=GG-102-00001.

Chicago style

David Weinberg, "Definition of Quantum", http://m.alexandrite.net/viewpage.html?id=GG-102-00001, (accessed April 03, 2026).

MLA style

"Definition of Quantum". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 04:45 UTC. 03 Apr 2026 http://m.alexandrite.net/viewpage.html?id=GG-102-00001

MHRA style

David Weinberg, "Definition of Quantum", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 04:45 UTC, http://m.alexandrite.net/viewpage.html?id=GG-102-00001 [accessed 03 April 2026].