speed of light in water

PHY 1161C.
Light travels best through no medium (matter), such as in outer space. In air, light slows down a bit, but still remains at a high speed. In water, light slows down to.
index of refraction of water = speed of light in vacuum / speed of light in water. The speed of light in vacuum is 3 x 10^8 m/sec.
Good lord, light is not mass. it is massless. And e = mc^2 where m is rest mass does not. not hold for the massless photons that make up light.

compared to the average speed of light in air the average. - Ask.com.

Jul 9, 2008. The photons must go slower because that is what light is. If you fired one photon under water it would have to move at the speed of light in.
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The speed of light in water is 2.25 108 m/s. What is correct about.
How Long is a Light Year? Of Stars and Drops of Water. A traveler, moving at the speed of light, would circum-navigate the equator approximately 7.5 times.
Mar 28, 2013. U should use this formula as far as i know: n = speed of light in a vaccum(c) / speed of light in some other medium (v). And water would fit in (v).
Is the speed of light a constant - Physics Forums.

speed of light in water

Yahoo! Canada Answers - How does density affect the speed of light?

23.8 What is the speed of light in water (n = 1.33)? n = c/v. v = c/n. v = (3.00 x 108 m/s)/(1.33). v = 2.26 x 108 m/s. 23.10 What is the wavelength in water of blue.