Asked by Anna

If a scuba diver is underwater and looks up, he or she will see a round "hole" directly above him or her at the surface of the water. The rest of the surface will look like a mirror. Explain this phenomenon

Answers

Answered by Damon
snell's law

light coming from right above comes straight down to the diver.
however
light coming from near the horizon hitting beyond the critical angle just reflects back up to the sky.
Answered by Damon
https://www.google.com/search?q=snell%27s+law+critical+angle+water+surface&client=firefox-b-1-ab&tbm=isch&tbo=u&source=univ&sa=X&ved=2ahUKEwjFpb6xx5vfAhWPnOAKHclXA-gQsAR6BAgCEAE&biw=1366&bih=626#imgrc=ON8oZ_r0XK-34M:

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