Speed of light in vacuum = ' c '-- Speed of light in Air . . 99.97% of ' c '.-- in Water . . . . . . . . 75% of ' c '.-- in Crown Glass . . . 64.9%-- in Flint Glass . . . . . 61.7%-- in Diamond . . . . . . 41.3%
No, slower. Light travels fastest in a vacuum. Anything transparent that light can pass through slows it down somewhat. Diamond crystal slows it down notably, which is part of what causes the "fire" in a diamond.
diamond is harder if it can be scratched by a rock its glass
scratch it against glass if the glass scratches its diamond
A cubic zirconia WILL cut glass. The way to tell it apart from a REAL diamond is that only a real diamond will cut a cubic zirconia.
A diamond has the highest index of refraction, about 2.4 Crown glass is about 1.5 and a vacuum is 1
Glass can bracke
No - diamond and glass are two completely different things. Diamond is a pure form of carbon. Glass is a mixture of different chemicals including (but not limited to) sand, silica and lime.
Speed of light in vacuum = ' c '-- Speed of light in Air . . 99.97% of ' c '.-- in Water . . . . . . . . 75% of ' c '.-- in Crown Glass . . . 64.9%-- in Flint Glass . . . . . 61.7%-- in Diamond . . . . . . 41.3%
Diamond is hardest Diamond cuts glass Glass does not cut diamond
Yes, that is correct. (Slower than in a vacuum.)
No, slower. Light travels fastest in a vacuum. Anything transparent that light can pass through slows it down somewhat. Diamond crystal slows it down notably, which is part of what causes the "fire" in a diamond.
There are several different types of glass, and light has a somewhat different speed in each of them. On the average, the speed of light across all typical types of glass is in the neighborhood of 2/3 its speed in vacuum, or around 200,000 km/sec .
diamond is harder if it can be scratched by a rock its glass
there is no magnifing glass in diamond mines!
A diamond will cut glass -- an emerald will not.
Diamond is the hardest mineral on earth. So a diamond can cut glass, but glass cannot cut a diamond.