lol... I think he means if the water is moving like, if someone is shaking the glass around and you're getting ripples in it. The density (and therefore refractive index) is different at different points in the glass, so the speed of the light wouldn't be the same everywhere.
Whereas you would be right if by "moving water", we just meant a glass of water, stationary with respect to the glass, but travelling at a constant velocity in some direction.
lol... I think he means if the water is moving like, if someone is shaking the glass around and you're getting ripples in it. The density (and therefore refractive index) is different at different points in the glass, so the speed of the light wouldn't be the same everywhere.
Whereas you would be right if by "moving water", we just meant a glass of water, stationary with respect to the glass, but travelling at a constant velocity in some direction.
The phrasing isn't greatbut as tazarooni89 says it's considered with respect to flat water because the refractive index would not be constant in moving water. When it says with respect to or in relation to it just means taking that factor into account. They did not want you to use the speed of light in air.
The phrasing isn't greatbut as tazarooni89 says it's considered with respect to flat water because the refractive index would not be constant in moving water. When it says with respect to or in relation to it just means taking that factor into account. They did not want you to use the speed of light in air.
Yea, but "with respect to" is a bad phrase to use, because it brings up ideas of Spec Rel, with are completely irrelevant :/
Yea, but "with respect to" is a bad phrase to use, because it brings up ideas of Spec Rel, with are completely irrelevant :/
I use with respect to a lot. It's so common to use for me now at uni that I abbreviate it in notes. In this case the semantics aren't great but it's correct.
I use with respect to a lot. It's so common to use for me now at uni that I abbreviate it in notes. In this case the semantics aren't great but it's correct.
Really? Oh, I might as well start to get used to it then haha