Lecture on Stephen Grays discoveries in electricity
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Lecture on Stephen Grays discoveries in electricity
A lecture at the Charterhouse, London on Stephen Grays discoveries in electricity. In the early eighteenth century, Gray demonstrated that charges of electricity could be conducted by some materials for distances as great as 765 feet, while others did not conduct electricity at all. Eventually, he was able to send charges through 88 metres of wire suspended on silken threads to operate an electroscope - an instrument used to detect static electricity. By sending an electrical signal from one place to another, Gray established the basic principle of the electric telegraph
Media ID 4361590
© Illustrated London News Ltd/Mary Evans
1874 21st Basic Charges Charter House Conduct Conducted Demonstrated Detect Discoveries Distances Eighteenth Electric Electrical Electricity Established Eventually Feet Gray Instrument Lecture Materials Metres Operate Principle S End Sending Signal Silken Static Stephen Suspended Telegraph Threads Wire
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