do all types of light travel at the same speed? Infrared light, ultraviolet light, light that is made from bio life, and so on. also, is laser light? does laser also travel at the same speed as light?
Yes they all travel at the same speed.
Yes, light travels at a constant speed, about 186,000 miles per second. However, the speed of light changes depending on the medium it's passing through. For example, light travels slower in Earth's atmosphere than in the vacuum of space.
In free space - yes. In other media - no. That is what dispersion is based upon...
