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06 types of electroscopes
- 1. Electroscopes 1
- 2. Electroscopes An electroscope is a device that is used to detect a static charge.
- 3. Electroscopes There are 3 kinds of electroscopes we will see: 1) Pith ball electroscope 2) Metal leaf electroscope 3) Needle electroscope
- 4. Pith Ball Electroscope 1) The pith ball electroscope is a ball connected to a stand using a nonconductive string.
- 5. Pith Ball Electroscope Nonconductive string Ball
- 6. Pith Ball Electroscope The ball is able to swing in any and all directions in response to nearby charges.
- 7. Metal Leaf Electroscope 2) A metal leaf electroscope is a vertical conductive rod with a metal ball on top and 2 thin sheets of loose metal attached at the bottom.
- 8. Metal Leaf Electroscope Touch ball Conductive bar Metal leaves
- 9. Metal Leaf Electroscope If a charge contacts the touch ball then both leaves will receive this charge and move apart. +- --- -+ --- - Neutral Charged
- 10. Metal Leaf Electroscope Copy this example into your notes. +- --- -+ --- - Neutral Charged
- 11. Needle Electroscope 3) A needle electroscope has a touch ball attached to a conductive bar that bends. There is a pivoted free-swinging needle on either side of (going through) this bar.
- 12. Needle Electroscope Touch ball Needle Conductive bar
- 13. Needle Electroscope If a charge contacts the touch ball then the bar and needle will become the same charge as the rod (by conduction) and will swivel away. --- -+- -- +-- Neutral Charged
- 14. Needle Electroscope Copy this example into your notes. +- --- -+ --- - Neutral Charged