Electricity, Magnetism & Light
part I, the 18th century

imponderables

William Gilbert (1544-1603)
earth a giant magnet

Pierre-Simon Laplace (1749-1827)
mechanical universe based on Newton's laws

Joseph Wright of Derby, Experiment on a Bird in an Air Pump (1768)
Francis Hauksbee (1660-1713)
plasma ball

Stephen Gray (1666-1736)
1729 - conductors / insulators
the flying boy

Leiden Jar (1745-46)
Ewald von Kleist
Pieter van Musschenbroek & Andreas Cuneus
Benjamin Franklin (magic squares)

Coulomb's Law (1785)	Newton's Law (gravity), 1687
K = 9 x 109	G = 6.67 x 10-11

animal magnetism
Luigi Galvani (Bologna)
Alessandro Volta (Pavia)