Science Projects And Inventions

YOU NEED:

• A glass of water
• A small coin
• A table

Do you know that you are capable of making a coin simply disappear.

Fill a clear glass, with straight sides, with water.

Put it on the table and then place a coin about six inches (15cms) behind it. Once viewed through the

glass, one will see two coins lying side by side. Now close one of your eyes- Lo! One coin will vanish!

HOW DOES IT WORK?

Light passing through a glass of water causes refraction" which means its path is bent. This causes

objects to appear to be in a different position than in reality. In this experiment for instance, one eye sees

the coin directly, while the other gets to see the refracted image of the coin which seems to be in a different position. The effect is that you think you see two coins.