quantum theory

noun

Definition of quantum theory

1 : a theory in physics based on the concept of the subdivision of radiant energy into finite quanta and applied to numerous processes involving transference or transformation of energy in an atomic or molecular scale

Examples of quantum theory in a Sentence

Recent Examples on the Web Now, in the early twentieth century, relativity and quantum theory were redrawing the map of reality in ways that could be verified by experiment and given precise mathematical expression. Adam Kirsch, The New Yorker, "Philosophy in the Shadow of Nazism," 12 Oct. 2020 Individual researchers still passionately disagree about what quantum theory means. Joshua Rothman, The New Yorker, "How Does Science Really Work?," 28 Sep. 2020 The basic idea is that the gravitational field of any object stands outside quantum theory. George Musser, Science | AAAS, "One of quantum physics’ greatest paradoxes may have lost its leading explanation," 7 Sep. 2020 To predict positronium’s properties, physicists need use only the relatively simple quantum theory of electric and magnetic forces, or quantum electrodynamics (QED), perhaps the most precise and best tested theory in physics. Adrian Cho, Science | AAAS, "Tantalizing oddity found in exotic atom—but physicists aren’t hyping it," 25 Aug. 2020 But the golden rule of quantum theory is to consider all possibilities, and exchanging a simple gluon represents just one among a vast landscape of scenarios that could unfold when two quarks collide. Quanta Magazine, "The Mathematical Structure of Particle Collisions Comes Into View," 20 Aug. 2020 But quantum theory appears to be inherently probabilistic. Zeeya Merali, Scientific American, "This Twist on Schrödinger’s Cat Paradox Has Major Implications for Quantum Theory," 17 Aug. 2020 This imposes a ceiling on predictive precision — and on how well physicists can understand what quantum theory says. Quanta Magazine, "The Mathematical Structure of Particle Collisions Comes Into View," 20 Aug. 2020 Tischler and her colleagues believed that analyzing and performing a Wigner’s friend experiment could shed light on the limits of quantum theory. Zeeya Merali, Scientific American, "This Twist on Schrödinger’s Cat Paradox Has Major Implications for Quantum Theory," 17 Aug. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quantum theory.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of quantum theory

1912, in the meaning defined at sense 1

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Time Traveler for quantum theory

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The first known use of quantum theory was in 1912

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Last Updated

8 Nov 2020

Cite this Entry

“Quantum theory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20theory. Accessed 27 Nov. 2020.

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More Definitions for quantum theory

quantum theory

noun

English Language Learners Definition of quantum theory

physics : a theory in physics that is based on the idea that energy (such as light) is made of small separate units of energy

quantum theory

noun

Medical Definition of quantum theory

: a theory in physics based on the concept of the subdivision of radiant energy into finite quanta and applied to numerous processes involving transference or transformation of energy in an atomic or molecular scale

More from Merriam-Webster on quantum theory

Nglish: Translation of quantum theory for Spanish Speakers

Britannica.com: Encyclopedia article about quantum theory

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