A rubber rod is rubbed with fur and brought near the top plate of an electroscope. It is shown that when the rubber rod is not touching the electroscope, the needle is repelled, but is relaxed as the rod is moved away. When the rod is brought up and touches the electroscope and is then removed, the needle remains deflected. The needle deflects even more when the rubber rod is again brought near the electroscope. Then when a glass rod which was rubbed with silk, is brought near the electroscope the needle relaxes and becomes less deflected.
Equipment:
- Rubber rod and glass rod
- Fur and silk pads
- Electroscope
----------------------------
This video is part of the project "Videos of Physics Demonstrations", which is created by Dr. Galli and Dr. Amiri of Physics Department, Weber State University. To access the full library of the videos, please visit this link: [ Ссылка ]
Links to University and Department:
Weber State University Homepage: [ Ссылка ]
WSU Physics Department: [ Ссылка ]
Ещё видео!