Chapter 20 #63

Above is a cross section diagram of the Leyden Jar. Pieter van Masschenbroek invented the Leyden Jar in 1975. The Leyden Jar would be used to store electric charge. The original jar was made out of a glass bottle, and it contained water to conduct electricity. A metal wire was passed through the cork which was used to close the jar. There was a conducting metal foil wrapped around the outside of the jar and also covering some of the inside surface. The inner and outer surfaces of the jar store opposite charges that are of equal amounts.

Franklin’s bells were used as an original form of detecting when an electrical storm was going to occur. This was because when the bells were connected to a lightning rod, they would ring when an electrical storm was close by. This idea was started when Franklin, during one of his experiments, realized that when 2 differently charged objects made contact with each other then they both would become the same charge. He also found that some things were attracted to charged objects. Using this idea he used a bell in place of one of the objects.

Blog Post #63

Pieter van Masschenbroek designed the Leyden Jar to store electric charge in 1975. It was originally made by okaying water into a glass bottle. The water acted as the conductor. A metal wire was then passed through the cork that closed the jar. The design later changed to used metal foil. The new jar was then chared by an electrostatic generator. The inner and outer surfaces store opposite charges that were of equal quantities.
The Wimshurst Machine, designed around 1880 by James Wimshurt is used to generate high voltages. Two large contra-rotating disks are mounted in vertical plan along with two metallic brushes as cross bars, and also included a spark gap. The electric charge is created through electrostatic induction. These two insulated disks and metal cross bars rotate in opposite directions which create an imbalance of charges. Sparks jump across the gap since the positive feedback increases until the dielectric breakdown voltage of the air is reached.