Dictionary Workbench Ondict

photon

Dictionary entry view. Switch to definition mode above when you know the meaning but not the word.

photon

Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++
Related topics: Physics
pho·ton /ˈfəʊtɒn $ ˈfoʊtɑːn/ noun [countable] technical  HPa unit of energy that carries light and has zero mass 光子
Examples from the Corpus
photonConsider a photon which is polarised parallel to the optical axis of P, .But photons are extremely odd particles indeed.How will you capture photons fast enough to propel the sail at speed and over long distances?The great advantage of using lower-energy photons rather than X-rays is the greater resolution attainable.But here things are very different: each individual photon behaves like a wave entirely on its own!Consider also, this kind of phenomenon affects not just photons, but every particle in every interaction.How can it be that by allowing the photon an alternative route, we have actually stopped it from traversing either route?The two photons are like the left and the right eyes of the cat.
Origin photon (1900-2000) photo- + -on particle (from ion)
pho·ton nounChineseSyllable
unit carries energy light of Corpus that a


photon
photon /ˈfəʊtɒn $ ˈfoʊtɑːn/ noun [countable] technical
 Date: 1900-2000
 Origin: photo- + -on 'particle' (from ion)
a unit of energy that carries light and has zero mass


pho·tonBrE /ˈfəʊtɒn/ 🔊NAmE /ˈfoʊtɑːn/ 🔊 noun (physics 物理) a unit of electromagnetic energy 光子