photon

photon

意味(日本語)

フォトン、光量子 ◇cf.phonon(=音子[音のエネルギー量子])

語源

  • photo- : Gk.photos=light(光)

意味(英語)

  • (noun) The quantum of electromagnetic energy, regarded as a discrete particle having zero mass, no electric charge, and an indefinitely long lifetime. See Table at subatomic particle.
  • (noun) A unit of retinal illumination, equal to the amount of light that reaches the retina through 1 square millimeter of pupil area from a surface having a brightness of 1 candela per square meter.

例文

  • The measurement of the twin photon is intentionally delayed (8 nanoseconds) after the measurement of the signal photon.

頭文字:

語源が同じ単語を一緒に覚えよう

photograph

photograph

写真

語源

  • photo- : Gk.photos=light(光)

photogenic

photogenic

写真写りのいい ◇genic(=born)

語源

  • photo- : Gk.photos=light(光)

photographic

photographic

写真の

語源

  • photo- : Gk.photos=light(光)

photosensitive

photosensitive

感光性の

語源

  • photo- : Gk.photos=light(光)