What is light?
- Light is the fastest traveling object in the universe traveling at a speed of 186,000 miles per second or 299,330 kilometers per second.
- Rays of light always travel in a straight line.
- Refraction of light when it passes from one medium to another medium, their direction changes, which is called refraction of light.
- Colors are different wavelengths of light.
- The longest wavelengths of light our eyes can see are red and the shortest wavelengths are violet.
- Light is a type of electromagnetic radiation and is made up of very small particles of light energy called photons.
- Light photons traveling in waves have a wavelength of only 380 to 750 nanometers.
