Saturday 23 June 2012

Can You See a Rainbow Other Than in the Sky?

You will use:
   A triangular piece of glass from a chandelier. A piece of glass of this shape is called prism.

Do this:
   Hold the prism in sunlight. If you don't see rainbow colors, move the prism until you see rainbow's beautiful colors.


Why does it work?
    White light, such as sunlight, is made up of seven colors: red,orange,yellow,green,blue, indigo and violet. When white light is refracted by the prism, the light break up into these seven colors and we see a "rainbow"

     A real rainbow is caused by sunlight being refracted through small raindrops high in the air.

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