Stephen Gray's discovery of the conduction of electricity.
Charles Francois du Fay discovered that electricity comes in two forms which he called resinous(-)and vitreous(+). Benjamin Franklin and Ebenezer Kinnersley later renamed the two forms as positive and negative.
Static Charges In The Air
Benjamin Franklin experiments with static charges in the air and theorized about the existence of an electrical fluid that could be composed of particles.
Benjamin Franklin invented the lightening rod - he demonstrated lightning was electricity.
First energy utility in US founded.
First electric motor invented by Michael Faraday.
J. P. Joule's law of electrical heating published
The electric transformer is invented. Thomas Edison introduces the "three-wire" transmission system