I asked my friends about this
When you think about how we (people) make light you end up with quite a small number of possibilities. The obvious one is ‘fire’ then along came electricity which is ‘in a sense’ another form of fire. When it passes through very thin wires it makes them heat up, they glow red and then become ‘white hot’ and give off lots of light. When you pass electricity through some gases they ‘light up’.
Light remember, is a form of energy and can therefore be changed to other forms of energy. See the Science Master Special on Energy
Then there are the sources of light which are not made by people. How many of those are there? Go to the ‘Leave a Reply’ area below and tell us .