What you need:
A coin, a plate, some water and a glass tumbler
Here’s how you do it:
1. Place a coin on a plate and pour just enough water to cover the coin. Set fire to a piece of paper.
2. Drop it in a glass tumbler.
3. Quickly invert the tumbler in the plate next to the coin
4. When the paper has burnt out the water, in the plate rushes up into the glass and the coin is left outside. As soon as the coin dries, pick it up without getting your fingers wet!
How does it work:
When the paper burns inside the inverted glass tumbler, the oxygen inside the tumbler is used up for burning. As the tumbler is inverted, fresh air cannot rush into the tumbler to occupy the space vacated by oxygen. Hence water from all around the glass on the plate rushes into the empty space created inside.
Picture Credit : Google
