it slows down
Any time a wave enters a new median it is called refraction, the speed, direction, wavelength, and angle of the wave all change. This is why when you put your foot or a stick or something in water, it appears as if is bending. Also, refraction is represented by Snell's law which is n1/n2=sinx2/sinx1=v1v2 (x is usually expresses as theta).
From air into water: Speed decreases, wavelength increases.
It decreases.
It travels faster in a liquid than in a gas, but it would travel faster still in a solid.
When light travels through anything that is not a vacuum, it will usually slow down.
No particle can reach the speed of light. Mass increases with speed, and the particle would become infinitely massive as it came closer to the speed of light.
Light always travels at the speed of light, although that's a different number in different substances.
it slows down
It decreases.
it travels at c (speed of light in a vacuum)
It travels faster in a liquid than in a gas, but it would travel faster still in a solid.
Light speed slows down in the glass.
In a vacuum, light always travels at the same speed, about 300 000 kilometers per second.
When light travels through anything that is not a vacuum, it will usually slow down.
No particle can reach the speed of light. Mass increases with speed, and the particle would become infinitely massive as it came closer to the speed of light.
The speed of light is dependent on the medium it travels through. Light travels fastest in a vacuum than in water or air.
Light always travels at the speed of light, although that's a different number in different substances.
A asteroid travels at the speed of light.
Nothing. It continues to propagate at the speed of light, and is not diffracted or distorted except by negligible gravitational effects.