A fun science demo with adult supervision or just a very pretty item to have an a (high) shelf! **This item is not meant to be a toy
It's a game of balance between liquid & vapor.
They want to be equal.
So, What's the Invisible force Pushing the liquid?
Vapor Pressure
Your hot hand transfers energy, making the vapors go wild. As it gets warmer, those vapors get feisty and force the liquid up to the top bulb.
The liquid inside doesn't actually boil.
Because there's a temperature difference between the two bulbs, the liquid moves from high pressure to low pressure. As the gas expands, it bubbles through the liquid, making it look like it's boiling.
Orders ship within 24 hours from Columbus, Ohio. Pickup orders are generally ready within an hour and are available Mon-Thur 10-5, Fri/Sat 10-6 and Sun 12-6.
