Making A Levitating UFO

Key Concepts:

• Electrostatic Levitation: Using electrostatic forces to suspend an object in the air.
• Electron Donator: A material that readily gives up electrons (in this case, fake fur).
• PVC (Polyvinyl Chloride): A type of plastic used for the tube.
• Charge Buildup: Accumulation of electric charge on a material's surface.
• Discharging: The release of accumulated electric charge.

Procedure for Electrostatic Levitation

1. Preparation of the Levitation Device:

   • A piece of PVC pipe is used as the main structure.
   • A rubber stopper is inserted into one end of the PVC pipe.
   • A small piece of wooden dowel is attached to the end of the rubber stopper. This entire assembly is designed to fit inside the PVC pipe.

2. Creating the Charging Mechanism:

   • A plastic bag is cut into a band. This band will be used to generate static electricity.
   • Fake fur is used as an electron donator.

3. Charging the Plastic Band:

   • The plastic band is placed inside the fake fur.
   • The band is pulled around within the fur to build up electrons on the plastic. This process charges the plastic band negatively.

4. Charging the PVC Pipe:

   • The PVC pipe is also rubbed with the fake fur to build up electrons on its surface, giving it a negative charge.

5. Levitation Attempt:

   • The charged wooden dowel/rubber stopper assembly is carefully picked up without discharging it.
   • The assembly is tossed into the air. The electrostatic repulsion between the negatively charged PVC pipe and the negatively charged assembly causes the assembly to levitate.

Explanation of the Physics

The demonstration relies on the principle of electrostatic repulsion. By rubbing both the PVC pipe and the plastic band with fake fur, both objects become negatively charged. When the charged assembly is placed inside the charged PVC pipe, the like charges repel each other, creating an upward force that counteracts gravity, resulting in levitation. The success of the demonstration depends on building up a sufficient charge on both objects and minimizing discharge during the process.