Light is all around, everyday. Whether the source is the sun, a lightbulb or a screen, it's around us 24/7 and yet, how often do we really ever stop to think about what it is or where it actually comes from. Visible Light by Perveen Kaur Photons Light is actually made of photons which are elementary particles. They travel through space from the source, whether the sun or a lightbulb, at the speed of light which is 186,000 miles per second. They have no mass which is why they

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