Definition of quantum electrodynamics

: quantum mechanics applied to electrical interactions (as between nuclear particles)

Examples of quantum electrodynamics in a Sentence

Recent Examples on the Web The theory of quantum electrodynamics (QED), which forms one pillar of the Standard Model of particle physics, has made theoretical predictions that match up with experimental results to an accuracy of one part in a billion. Quanta Magazine, "How Mathematical ‘Hocus-Pocus’ Saved Particle Physics," 17 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 The theory the paper advanced, called quantum electrodynamics, or QED, ranks among the great achievements of modern science. George Johnson, New York Times, "Freeman Dyson, Math Genius Turned Technological Visionary, Dies at 96," 28 Feb. 2020 The theory the paper advanced, called quantum electrodynamics, or QED, ranks among the great achievements of modern science. George Johnson, New York Times, "Freeman Dyson, Math Genius Turned Technological Visionary, Dies at 96," 28 Feb. 2020 The theory the paper advanced, called quantum electrodynamics, or QED, ranks among the great achievements of modern science. George Johnson, New York Times, "Freeman Dyson, Math Genius Turned Technological Visionary, Dies at 96," 28 Feb. 2020 The theory the paper advanced, called quantum electrodynamics, or QED, ranks among the great achievements of modern science. George Johnson, New York Times, "Freeman Dyson, Math Genius Turned Technological Visionary, Dies at 96," 28 Feb. 2020 The theory the paper advanced, called quantum electrodynamics, or QED, ranks among the great achievements of modern science. George Johnson, New York Times, "Freeman Dyson, Math Genius Turned Technological Visionary, Dies at 96," 28 Feb. 2020 The theory the paper advanced, called quantum electrodynamics, or QED, ranks among the great achievements of modern science. George Johnson, New York Times, "Freeman Dyson, Math Genius Turned Technological Visionary, Dies at 96," 28 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quantum electrodynamics.' 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 electrodynamics

1927, in the meaning defined above

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The first known use of quantum electrodynamics was in 1927

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Last Updated

27 Sep 2020

Cite this Entry

“Quantum electrodynamics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20electrodynamics. Accessed 22 Oct. 2020.

More from Merriam-Webster on quantum electrodynamics

Britannica.com: Encyclopedia article about quantum electrodynamics

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