The speed of light is about 3*10^8 m/s in a vacuum. In a vacuum it is always that.
However passing through a material like water or glass it slows down a little (Google "refraction of light").
The most obvious use I can think of is a rainbow. The different frequencies (or "colors") are slowed differently leading to stripes of different colors.
What are some of the potential uses for slow light? Why would scientists want to slow it down?
3 answers
Thank you
What are some of the potential uses for slow light? Why would scientists want to slow it down?
What are some of the ways that scientists are using to slow down light?
If scientists could create a sheet of glass with a refractive index so high that it took light months or years to travel through the glass, what kind of things do you think they could do with it?
What are some of the ways that scientists are using to slow down light?
If scientists could create a sheet of glass with a refractive index so high that it took light months or years to travel through the glass, what kind of things do you think they could do with it?
1 answer