Light

Light

Light

The primary light colours are red blue and green. They can be mixed, as follows, to form secondary light colours:

  • red + green = yellow
  • red + blue = magenta
  • blue + green = cyan

By using a prism, white light can be separated into all the different (dispersion) colours that make up white light. These are (starting with long wavelength):

  • red, orange, yellow, green, blue, indigo, violet

Reflection:

  • The angle of incident always equals the angle of reflection.
  • These are measured against the normal which is an imaginary straight line at a right angle to the mirror.

Refraction:

  • Refraction is the process that occurs when light travels from one material to another, it is either speed up or slowed down.
  • This has an effect on the light and bends it.
  • The denser the material, the slower the speed of light.
Waves

Electromagnetic Spectrum

Electromagnetic Spectrum

Waves

Sound

Sound

Waves

Waves

Waves