| 词汇 | example_english_photon-sphere |
| 释义 | photon spherecollocation in Englishmeanings of photonand sphereThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with photon or sphere. photon noun[C] uk /ˈfəʊ.tɒn/ us /ˈfoʊ.tɑːn/ a single unit ... See more at photon sphere noun[C] uk /sfɪər/ us /sfɪr/ an object shaped like a ... See more at sphere Examples of photon sphereThese 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. The concept of a photonsphere in a static spherically metric was generalized to a photon surface of any metric. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The photonsphere is located farther from the center of a black hole than the event horizon and ergosphere. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Another property of the photonsphere is centrifugal force (nb: not centripetal) reversal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are no stable free fall orbits that exist within or cross the photonsphere. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Conversely, subject to an energy condition, any photonsphere must cover more than a certain amount of matter, a black hole, or a naked singularity. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Subject to an energy condition, a black hole in any spherically symmetric spacetime must be surrounded by a photonsphere. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Outside the photonsphere, the faster one orbits the greater the outward force one feels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Inside the photonsphere the faster you orbit the greater your felt weight or inward force. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. If approaching at a different angle, such as one from the poles of the black hole to the equator, there is only one photonsphere. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Similar properties of photonsphere were also found numerically for the metamaterial black hole. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The photonsphere that is closer to the black hole is moving in the same direction as the rotation, whereas the photon sphere further away is moving against it. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A rotating black hole has two photon spheres. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This equation entails that photon spheres can only exist in the space surrounding an extremely compact object (a black hole or possibly a neutron star). 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. Want to learn more? Go to the definition of photon Go to the definition of sphere See other collocations with photon See other collocations with sphere |
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