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单词 photographic magnitude
释义

Definition of photographic magnitude in English:

photographic magnitude

noun
Astronomy
  • The apparent magnitude of an astronomical object as measured on a photograph (which differs from the visual magnitude because conventional photographic emulsion is more sensitive than the eye at the blue end of the spectrum).

Origin

Late 19th century; earliest use found in Proceedings of the Royal Society of London.

Definition of photographic magnitude in US English:

photographic magnitude

noun
Astronomy
  • The apparent magnitude of an astronomical object as measured on a photograph (which differs from the visual magnitude because conventional photographic emulsion is more sensitive than the eye at the blue end of the spectrum).

Origin

Late 19th century; earliest use found in Proceedings of the Royal Society of London.

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更新时间:2025/7/1 19:00:28