manual

You need:
31
clear prism
How to do it:
1) Hold the clear prism so that the rays of the sun
catch one of the faces at an angle (see the diagram).
2) Look on the floor or a wall exposed to the sun, about
half a yard away. You should be able to see the seven
colors of the rainbow. (You may need to tilt the
prism a bit to get the sun’s rays to hit
it properly.)
This experiment was first
carried out by English physicist
and mathematician Isaac Newton
(1642-1727) mor
e than 300 years ago.
Do the experiment so the colors are
formed in a shady area.
Never look directly at the sun with the
naked eye or through an instrument