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Light and Electricity Experiment

September14

This week we watched one about A world changing experiment

I strongly recommend watching the video than reading the reflection, it would make much more sense

The link to the video is here…   Click here

KEY:

Blue = Facts

Red = Understandings

Green =  Questions

Black  = More Information

At Charterhouse there is a famous sample of a very world changing experiment about electricity and lights in general. Because of this experiment we understand more and can use power. Which is very convenient in the world we live in today.

Stephen Gray did the experiment very carefully and specifically to get the best result. To do this experiment Stephen Gray the inventor of the experiment built a wooden frame and formed the top beam he then attached two swings using silk rope coming off the swings. He had another device called a Hauksbee machine. This machine was carefully designed for generating static electricity.

What was his inspiration to do the experiment?

The way he conducted an experiment was to get an orphan boy from the Charterhouse and then he told the Orphan boy to lie across two swings. Stephen Gray then carefully placed gold leaf in front of him.

He then generated electricity…

By charging the connecting rod that was connected into the boy and the swing.

Gold leaf leapt to the boys fingers. People even believe sparks were coming out of his fingers.

Where did he get the technology and gold leaf to do this experiment?

The way Stephen Gray saw it was quite clever and the way we use power today is based on his observation. He then discovered from his experiment that electricity could move…

This happened from the machine to the boy’s body, through to his hands. But the silk rope stopped it dead. It means the electrical fluid could flow through some things but not through everything.

It opened a new path for Stephen Gray. It divided the world into two different kinds of substances for him. He named them insulators and conductors. Insulators held electric charge within them and made them stand still or make the electricity not move, like the silk rope. Although conductors allowed electricity to flow through them, like the boy.

This observation is crucial even today. The power-lines we have today work on the same system that Gray did his experiment on almost 300 years ago. The wires on the power-lines act as conductors. The glass and the metal are more insulators that stop the electricity leaking from the conductors or wires into the power-line and down to earth. The wires on the power-lines are exactly like the silk rope in Stephan Gray’s experiment…

I understand about why they used power-lines as an example because the experiment is really similar and we need power-lines as they are a big part of our life today. You could also really see the key similarities between the insulators and conductors in power-lines and in Grays experiment.

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