Multiple choice general knowledge

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 Römer first measured the speed of light in 1676 by observing the timing of Jupiter's moon Io. Einstein worked on relativity, Newton on classical mechanics, and Galileo on astronomy and physics but didn't measure light speed.