Word.ws English Dictionary

photon spheres

photon spheres is the plural of photon sphere.

Meaning of photon sphere

Noun

photon sphere (plural photon spheres)

  1. Of a black hole, a spherical limit around a black hole at such distance that any photon meeting it tangentially is constrained to travel in a circular orbit; (more loosely) the region between this limit and the event horizon.
    • The radius of the photon sphere is also the lower bound for any stable orbit.

Questions about photon spheres

What is photon spheres the plural of?
Photon spheres is the plural of photon sphere.

Words near photon spheres in the dictionary

  1. photon mapping
  2. photon mappings
  3. photon sail
  4. photon sails
  5. photon sphere
  6. photon spheres
  7. photon tunnelling
  8. photonastic
  9. photonasty
  10. photonecrosis
  11. photonegative

Source and license

Adapted from Wiktionary: photon spheres (page history and authors); photon sphere (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “photon spheres.” Word.ws, https://word.ws/photon_spheres. Based on Wiktionary, CC BY-SA 4.0.