The Coanda Effect is cool - it describes how air and water in motion follow curved surfaces. So as the air comes out of the leaf blower, it wraps around the curved sides of the bottle and bulb. When combined with the Bernoulli Principle, we get fun floating objects that stay in the air stream. Try it yourself and be sure to tag me, @sciencebob, so I can check it out! #physicsexperiment #chemistryexperiments #coandaeffect #teachersofinstagram | Science Bob