In Wollaston's battery, the wooden box was replaced with an earthenware vessel, and a copper plate was…
In Wollaston's battery, the wooden box was replaced with an earthenware vessel, and a copper plate was…
The System of Arc Lights is a device used to obtain electric light by conducting a current of electricity…
The System of Incandescent Lights is a device in which electric light is obtained by conducting a current…
"In the gold-leaf electroscope (invented by Bennet in 1787), two light strips of gold-leaf hang from…
"This apparatus shows the rotation at once of a magnet and of a movable conductor. The rotating pieces…
"Faraday's ice pail experiment. An ice pail P connected with gold leaves of an electroscope C, is placed…
"Around a vertical conductor carrying a heavy current, place a peice of paper and sprinkle iron filling…
One of the sets of vertical cords or wires in a loom, forming the principal part of the harness that…
"Nichols Rheostat. a, wooden frame; b, tinned iron strip; c, stationary, and c', movable binding-posts;…
"Right hand rule to determine the direction of magnetic field around a conductor carrying a current.…
"A shunt, in electricity, is a conductor placed between two points in closed circuit, to divert or shunt…
A spark arrestor is a device intended to prevent combustible materials, usually sparks or other tiny…
The Wimshurst Machine is an electrostatic device to generate high voltages. "It consists of two circular…
A cartoon of a woman talking to a train conductor, with a pile of packages at her feet.