Multiple choice general knowledge science & technology

The velocity of light was first measured by

  1. Einstein

  2. Newton

  3. Romer

  4. Galileo
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ole Rømer first demonstrated that light has a finite speed and made the first quantitative measurement in 1676 using Jupiter's moon Io. Einstein formulated special relativity, Newton studied gravity and optics but believed light speed was infinite, and Galileo attempted but failed to measure light speed. Rømer is recognized as the first to successfully measure it.

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