the time taken by light to travel a specified distance, esp. from a celestial object to the earth.
| 单词 | θ987603 |
| 释义 | the world > matter > physics > electromagnetic radiation > light > emission of light, radiation > [noun] > speed of light > time taken (1) light-time1900 the time taken by light to travel a specified distance, esp. from a celestial object to the earth. |
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