Science Class 5/6/13
Benjamin Franklin invented the Lightening Rod
First electric battery invented by Alessandro Volta
D. F. Arago invented the electromagnet
Relationship of electricity and magnetism confirmed by Hans Christian Oersted
First electric motor invented by Michael Faraday.
Generation and transmission discovered by Michael Faraday.
First fuel cell invented by Sir William Robert Grove
The first hydroelectric power station opens in Wisconsin.
Steam turbine invented by Charles Parsons.
Rotating field AC alternator invented by Nikola Tesla
60 cycle AC system introduced in U.S.
Electron discovered by J. J. Thomson.
Lee De Forest invented the electric amplifier.
Electric refrigerator is invented.
The transistor is invented