## anonymous 5 years ago what is the speed of light in water?

1. JamesJ

By definition of the refractive index, n = speed of light in a vacuum / speed of light in medium. For water, n = 1.33. Given that, you can calculate the speed of light in water.

2. JamesJ

Remember that the speed of light in a vacuum is $c = 3.00 \times 10^{10} \ \ m/s$

3. anonymous

thanks :)