Wondrous Facts about Light

☼ It takes about eight minutes for light to travel from the Sun to Earth.

☼ It takes light 100,000 years to travel from one end of the Milky Way to the other.

☼ The primary colours of light are red, green and blue. Light in these colours can be added together to make the secondary colours magenta (red and blue), cyan (green and blue) and yellow (red and green).

☼ Light is a wave and makes up the electromagnetic spectrum. Radio waves, visible light, and Xrays are actually all the same thing, just different sizes and uses.

☼ Space does not have any light. We can see things in space due to light bouncing off of the objects in space.

☼ White light is actually a mix of all the different colours, that's what we see when we see a rainbow.

☼ Light is used to transmit the signals for superfast broadband down optical fibres.