Wet or Dry Magic Fork Experiment

Procedure
Take a drinking glass filled with water and a clean fork. Dunk the end of the fork into the water. You can control whether the water drips off when you pull it out slowly, by the angle, or by how fast you pull it out. It takes some practice, but when you pull it out slowly and straight up, the fork comes out dry and will not drip water.

If you pull it out fast and at an angle, it will drip lots of water. With practice, you can amaze your friends by altering your lifting techniques just at the water surface.

Scientific Principle at Work
Hydrodynamic flow is governed by rheological (the science of flow) properties. This is just a fancy way of saying that liquids move a certain way according to the laws of gravity and physics. The viscosity and thickness of the water-film control how fast it flows off the ends of the fork.

Using these principles, a new kind of plastic called polymers are more affordable because they drastically lower the viscosity of the plastic during manufacturing. These plastics are used in packaging that keeps food fresher, longer, so you and your family can eat healthier foods.