Science Projects And Inventions

YOU NEED:

• A coin

• A paper match

• A transparent plastic cup

• A pocket comb

Gingerly balance a coin on Its edge. Place a paper match stick on top as in the Illustration. Now upturn an

empty glass over the coin and the match stick.

The problem: Try to knock the match off without disturbing the coin. There is a condition: You are disallowed

from touching the glass and you cannot shake the table because the coin will fall.

HOW DOES IT WORK?

The trick is done by static electricity. Take a pocket comb and rub it vigorously on your shirt or skirt. Now

hold the comb close to the glass and the match will drop. The coin remains undisturbed.