What is lightning? What is electroscope?
Answers
Answer:
An electroscope is a device that detects and measures the strength of static electric charge. The device has two easily charged objects, called “leaves,” hanging from a vertical metal rod.
Answer:
Lightning conductor is a device used to protect a building from the effects of lightning. A lightning conductor is made of a thick strip of metal (usually of copper). The top end of lightning conductor is pointed like a sharp spike (or spikes) and it is fixed above the highest point of the building.
Electroscope is a simple device which is used to test the presence of charge in an object. The gold-leaf electroscope was developed in 1787 by a British scientist named Abraham Bennet. Gold and silver are among the best conductors of electric current and hence leaves of these metals are used in electroscope.