When I say, "What does that mean?" I'm saying that the use of the word in the sentence does not help explain or define the word.
What does "incandescent" mean?
What does "optimist" mean?
3. That star is so bright and glowing that it looks incandescent. (Now I have an idea of what the word means.)
4. I love life so much, so I must be an optimist. (Now I have an idea what that word means.)
This has nothing to do with anything here. This is about the refraction of light.Quote:
*So this I brought it from a physics book.. it was wriiten likes this" Why a spon appear to bend when immersed in water?