| 词汇 | photon |
| 释义 | photon noun[ C ] physics specializeduk /ˈfəʊ.tɒn/ us /ˈfoʊ.tɑːn/ a single unit of light光子，光量子 Quantities & units of light anti-glare aureole beam blip brightness glare gleam glimmer glitter glow halo multiphoton pencil radiance ray sheen shimmer shine sunbeam twinkle photon | American Dictionaryphoton noun[ C ] us/ˈfoʊ·tɑn/ physics a very small piece of matter that is the basic unit of electromagnetic energy, and that travels in waves and carries light and other forms of radiation Examples of photonphoton The entrapment of radiation will make a photon be emitted and resonance-reabsorbed many times inside the laser material. Suppression of the potential well prevents the free electrons from recombination and, thus, no high-energy photon can be emitted. The photon counting histogram in fluorescence fluctuation spectroscopy. However, a significant radiated energy can be achieved since all the electrons scattered in the photon mirror will radiate. We can see that the photon energy is enlarged greatly in the laboratory frame because of the relativistic effect. To look at alterations in photon responses, dim flashes of light were presented in the presence or absence of steady background illumination. Following the injection of such pulses into strongly scattering media, such as tissue, the time dispersion of the photons can be studied. One detection scheme presently in use requires optical band-pass filters appropriately designed to bin emitted fluorescence photons of desired target molecules. This mismatch is mainly related to the inability of primary producers to harvest the photons incident on the sea or the land surface. A small contribution is also obtained from electrons produced by photon interactions in the chamber. The ridges have compressed enough to be somewhat opaque to backlighter photons. This process is analogous to treating the photon or plasmon field as particles. Charged particles will attain relativistic energies close to the pulsar magnetic poles and radiate -ray photons. The polarization vector of the massive transverse photon hence is perpendicular to the propagation direction, an expected result. When reflection occurs, we can identify the laser pulse with a photon mirror. 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. Collocations withphotonphotonThese are words often used in combination with photon. Click on a collocation to see more examples of it. high-energy photon Suppression of the potential well prevents the free electrons from recombination and, thus, no high-energyphoton can be emitted. incident photon A simple pumping criterion is considered, and the incidentphoton flux required has been related to the photoionization coefficient and the stimulated emission cross section. incoming photon An incoming photon will create a number of such ion pairs proportional to its energy. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. 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. See all collocations with photon |
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