Physics Experiments: Levitating small spherical objects and air pressure

This is Simon’s favourite self-made toy at the moment: a straw and a ball made of foam clay. He is continuously experimenting with trying to levitate the ball with rising air, also after he tilts the straw and the air is blown sideways, a phenomenon dominated by the Coanda effect.  Above is another variation of this experiment with a blow drier. Simon is also interested in acoustic levitation, but we had to admit to ourselves that building an acoustic levitation set at home is to advanced for us, at least for the time being.

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