*quanta*)

# quantum theory

quantum theory

**MLA Style**

"quantum theory." YourDictionary, n.d. Web. 11 October 2018. <http://www.yourdictionary.com/quantum-theory>.

**APA Style**

quantum theory. (n.d.). Retrieved October 11th, 2018, from http://www.yourdictionary.com/quantum-theory

## quantum theory

noun

- A theory in physics based on the principle that matter and energy have the properties of both particles and waves, created to explain the radiation of energy from a blackbody, the photoelectric effect, and the Bohr theory, and now used to account for a wide range of physical phenomena, including the existence of discrete packets of energy and matter, the uncertainty principle, and the exclusion principle.
- Any of various specific applications of this theory.

**MLA Style**

"quantum theory." YourDictionary, n.d. Web. 11 October 2018. <http://www.yourdictionary.com/quantum-theory>.

**APA Style**

quantum theory. (n.d.). Retrieved October 11th, 2018, from http://www.yourdictionary.com/quantum-theory

(*plural* quantum theories)

- (physics) A theory developed in the early 20th century, according to which nuclear and radiation phenomena can be explained by assuming that energy only occurs in discrete amounts called quanta.
- (physics) Modern quantum mechanics.

**MLA Style**

"quantum theory." YourDictionary, n.d. Web. 11 October 2018. <http://www.yourdictionary.com/quantum-theory>.

**APA Style**

quantum theory. (n.d.). Retrieved October 11th, 2018, from http://www.yourdictionary.com/quantum-theory