Science Projects And Inventions

YOU  NEED:

• A torch
• A mirror

Prop a mirror against the wall and place your drawing board in front of it. Tape the front of a torch with some opaque insulation tape in such a way that you leave just a slit on the glass, about 4 mm wide, for the light to come out. Draw a  line perpendicular to the mirror in the centre of the board. Place the torch facing the mirror, as shown in the illustration and switch it on. Use drawing pins to track the path of the light, from the torch, on the drawing board. Do  the same for the light reflected off the mirror. On examination you will find that the path taken by the light from  the torch and off the mirror forms equal angles on either side of the line you had drawn on the drawing board.