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Tagged with refraction water
33
questions
3
votes
1
answer
317
views
Is the IoR of water exactly $4/3$?
The index of refraction of water is commonly cited as $n \approx 1.33$, to varying numbers of decimal places. I've never seen a decimal expansion for this value with any digit other than $3$ past the ...
- 1,787
3
votes
1
answer
3k
views
Reflections in a glass of water
I've noticed that if you take a full glass of water and look from above, through the water, you can't see through the glass sides - instead, you see a reflection. I tried with a laser pointer and the ...
- 125
27
votes
5
answers
16k
views
Eyes open under water
Yesterday I looked underwater with my eyes open (and no goggles) and I realized I can't see anything clearly. Everything looks very, very blurry. My guess is that the eye needs direct contact with air ...
- 3,930