Easy-to-Use Hand-Held Model
This demonstrates one of the many interesting phenomena that Hero discovered: how the elasticity of air can force water above its source. Fill the upper bulb with water. Then, sealing the nozzle with your finger, fill the cup with water, compressing the air trapped in the lower bulb. Remove your finger and watch water shoot out the nozzle. The fountain is all glass and is 30cm high.
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