October 11, 1745, Ewald Jurgen von Kleist presents the "Leyden bottle".

On this day (October 11), 1745, the German scholar and clergyman Ewald Jurgen von Kleist presents the electrical experiment that became famous under the name "Leyden bottle".
Ewald Jurgen von Kleist was born in Vietzow, June 10, 1700, he was a Lutheran clergyman, jurist and physicist.
In 1745 he was conducting some experiments with electrostatic electricity and discovered that it could be stored in a kind of container that came to be called "the Leyden jar". This bottle is the first known practical condenser.
It is called a Leyden jar because it is not entirely clear who discovered it, since although it is attributed to Ewald Jurgen von Kleist who studied jurisprudence at the University of Leyden, also at that time Pieter van Musschenbroek (physician and physicist working at the University of Leyden) also discovered the same bottle by conducting some experiments.
Pieter van Musschenbroek carried out some experiments in 1746 where he wanted to check if electric charges could be conserved in a bottle filled with water with a rod inserted. In the experiment an assistant separated the electrically charged conductor from the rod in the bottle and then received a large shock by touching the rod with his other hand.
Here we leave a video where you can see the construction and experiment with a Leyden jar:
- I think I managed to save electricity
- where?
- in this bottle over there
- and how do you know?
- I have my suspicions
- suspicious?
- and how are you going to verify it?
- well... can you touch the bottle rod?
- hahahaha... play it yourself!
- not you
- no... you...
- come on, you
- no... you won't know...
- tell your little son to come here for a moment...
- no... do it yourself...

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