The refractive index of diamond is about 2.42 . So the speed of light in it is
(speed of light in vacuum) divided by (2.42)
That's 123.9 thousand kilometers per second (about 77,000 miles per second).
Gravitational waves travel through space at the speed of light, which is about 186,282 miles per second.
The number is comparative. Refractive index is a dimensionless number that represents how fast radiation -- in this case, light -- travels through a medium, in this case, diamond. The number assigned to a diamond is the highest number on the scale. The scale includes gases, liquids and solids. This means that with a refractive index of 2.42, 'light travels 2.42 times as fast in vacuum as it does in a diamond'. You can read more about refractive indices, below.
Sound waves require a medium to travel through, such as air, water, or solids, and they propagate by causing particles in the medium to vibrate. Light waves, on the other hand, can travel through a vacuum and do not require a medium. They propagate as electromagnetic waves and can travel through empty space.
Nothing can travel faster than light in a vacuum.
Electromagnetic waves travel at the speed of light in a vacuum, which is approximately 186,282 miles per second.
Copper is opaque to light - light can not travel though it.
The refractive index of diamond is about 2.42 . So the speed of light in it is (speed of light in vacuum) divided by (2.42) That's 123.9 thousand kilometers per second (about 77,000 miles per second).
ans2. Light is an electromagnetic phenomena, and is unaffected by the motion of air.
Light goes incredibly fast through space, bouncing off objects.
Gravitational waves travel through space at the speed of light, which is about 186,282 miles per second.
Yes, they travel some fast!
670 616 629 mph
The number is comparative. Refractive index is a dimensionless number that represents how fast radiation -- in this case, light -- travels through a medium, in this case, diamond. The number assigned to a diamond is the highest number on the scale. The scale includes gases, liquids and solids. This means that with a refractive index of 2.42, 'light travels 2.42 times as fast in vacuum as it does in a diamond'. You can read more about refractive indices, below.
Sound waves require a medium to travel through, such as air, water, or solids, and they propagate by causing particles in the medium to vibrate. Light waves, on the other hand, can travel through a vacuum and do not require a medium. They propagate as electromagnetic waves and can travel through empty space.
the speed of light
The sped of light is 186,000 miles per second or 300,000 kilometers per second in a vacuum. In a diamond, one of the densest trasperant objects we know light travels alot slower.
it can travel from 380nm [nanometres] to 740nm