Technical illustrations of 19th century items of electro-magnetic equipment. There are 16 early electrostatic devices for generation,storage and demonstration and 1 early electromagnetic device which demonstrates the dc motor effect. Included are an electrophorus,a Nairne type electrostatic generator,a Holz disc-type electrostatic generator,a pith ball electroscope attached to a metal vessel (Faraday's icebucket),variable insconnector tongs,a Henley quadrant electroscope,an electrophorus attached to a pith ball electroscope,a rotatable assemblage of spherical brass conductors on insulated columns,an electrophoros above two paper figures which 'dance' in the electric field,Leyden battery,Coulomb Torsion Balance,a device showing the principle of the lightning conductor,and a Barlow's wheel which illustrates the basis of the electro-magnetic motor |