Is the lightning rod discovered by American scientist Frank?
The modern lightning rod was invented by American scientist Franklin. Franklin thinks lightning is a discharge phenomenon.
After the capture of lightning in kite experiment successfully, Franklin produced in the research of lightning and artificial friction electricity consistency, he from the analogy made such speculation: since the artificially generated electrical energy is the tip of absorption, then lightning can also be the tip of the absorption. He designed the kite experiment, and the success of the kite experiment in turn confirmed his conjecture. He imagined that if a sophisticated device could be placed on a high object, it would be possible to bring it into the ground. Franklin put this arrester: put a few meters long thin iron bar is fixed on top of the tall buildings, separated by an insulator between the iron bars and buildings.
To prove this, he braved the risk of lightning during a thunderstorm in July 1752, flying a kite with a long metal wire into a thunderstorm and tying a string of copper keys at the end of the wire. When the lightning struck, Franklin approached the key, and a spark of electric sparks appeared on the key. There's numbness in your hands. Fortunately, the lightning passed down this time was weak, and Franklin was unhurt.
Then connect to the bottom of the iron bar with a lead. Then lead the wire into the ground. Franklin called the device "lightning rod". After trial, it can really play the role of lightning protection. The invention of lightning rod is the first technical achievement with great value in early electrical research.
