virtual photon

collocation in English

meaningsofvirtualandphoton

These words are often used together. Click on the links below to explore the meanings. Or,see other collocations withphoton.
virtual
adjective
uk
/ˈvɜː.tʃu.əl/us
/ˈvɝː.tʃu.əl/
almost a particular thing ...
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photon
noun[C]
uk
/ˈfəʊ.tɒn/us
/ˈfoʊ.tɑːn/
a single unit ...
See more atphoton

(Definition ofvirtualandphotonfrom theCambridge English Dictionary© Cambridge University Press)

Examplesofvirtual photon

These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
Thevirtualphotonemitted by the electron is also polarized and so seeks out quarks of spin in the same direction as the photon.
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Here, an excited sensitizer atom can transfer its excitation to a neighbouring acceptor atom, via an intermediatevirtualphoton.
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In the near-field region, the excited chromophore emits avirtualphotonthat is instantly absorbed by a receiving chromophore.
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It emits avirtualphotoncarrying to transfer energy and momentum to the other electron.
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But in this diagram, before that happens, it emits anothervirtualphotoncarrying four-momentum, and it reabsorbs this one after emitting the othervirtualphoton.
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The process of imparting energy from the nucleus to an orbital electron is a quantum process and may be seen as taking place by means of avirtualphoton.
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However, the transient virtual photons of quantum electrodynamics may also adopt unphysical polarization states.
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Although these transient virtual photons can never be observed, they contribute measurably to the probabilities of observable events.
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It is caused by the exchange of virtual photons.
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Virtual photons composing near-field fluctuations and signals, have effects that are of far shorter range than those of real photons.
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According to this vacuum energy explanation, since quantum theory holds that vacuum contains virtual particles, the rapidly moving interface between water and gas converts virtual photons into real photons.
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These virtual photons, however, do not violate causality or special relativity, as they are not directly observable and information can not be transmitted acausally in the theory.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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See other collocations withphoton