Amaze your friends by making water defy gravity.
Water in rivers, in a glass, or falling from clouds obeys gravity. It’s going to fall towards the ground because of the physical pull of the earth. But, what if we told you that you could turn a glass of water completely upside down and the water wouldn’t fall to the floor? That’s what happens in the Anti-Gravity Water demonstration. It’s a simple experiment that dramatically demonstrates the amazing physical properties of water.
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- Tall glass with a round edge
- A handkerchief
- A pitcher of water
- Bowl or sink
Drape the handkerchief over the glass, making sure that you push the center of the handkerchief down into the glass.
Fill the glass 3/4 full with water by pouring water into the middle of the handkerchief.
Slowly pull the handkerchief down the sides of the glass making it taut (stretched tightly across the surface of the glass). Grip the ends of the handkerchief at the bottom of the glass.
Place one hand over the mouth of the glass and turn it over with the other hand. You may want to do this over a bowl or sink as a few drops may leak out.
Pull the lower hand away from the glass (slowly) and the water should stay in the glass!
How Does It Work
Most people predict that the water will leak through the holes in the handkerchief because the water leaked through the holes as it was poured into the glass. The holes in the handkerchief became incredibly small when the cloth was stretched tightly across the mouth of the glass. This action allowed the water molecules to bond to other water molecules, creating what is called surface tension. The water stays in the glass even though there are tiny holes in the handkerchief because the molecules of water are joined together to form a thin membrane between each opening in the cloth.