"' Franklin's electrostatic machine "'is a high-voltage static electricity generating device used by Benjamin Franklin in the mid-eighteenth century for research into electrical phenomena.
22.
To operate, a DC voltage of a few kilovolts to as much as 100 kV was applied between the anodes and the cathode, usually generated by an induction coil, or for larger tubes, an electrostatic machine.
23.
In his electrotherapy, Bird used both electrochemical and electrostatic machines ( and later also electromagnetic induction machines ) to treat a very wide range of conditions, such as some forms of electric moxa, to heal skin ulcers.
24.
By the end of the 17th Century, researchers had developed practical means of generating electricity by friction with an electrostatic generator, but the development of electrostatic machines did not begin in earnest until the 18th century, when they became fundamental instruments in the studies about the new science of electricity.
25.
"' 1753 "': C . M . ( of Scotland, possibly Charles Morrison, of Greenock or Charles Marshall, of Aberdeen ) proposes in the 17 February edition of Scots Magazine, an electrostatic telegraph system with 26 insulated wires, each corresponding to a letter of the alphabet and each connected to electrostatic machines.
