
Hydrostatic GlassYou fill up a glass with water, cover it with a piece of paper, turn the whole thing upside down, let go with your hand and the paper and the water stays! Thats physics!
$29 
Klap-o-meterThe children start clapping their hands and the “mercury” of the Klapp-O-Meter rises. When the sound of the applause decreases, so does the “mercury”. When the clapping reaches its climax, the...
$55 
Add-a-Number Note BookThis is a classic mental effect where three spectators each write down a number and a fourth spectator makes the addition. this sum matches your prediction. So far so good.
$60