Apparatus to show apparent weight increase in charged cork ball Apparatus to show apparent weight increase in charged cork ball 1850-1900
Apparatus for transfer of electrostatic charge by induction, incomplete, Riviere material, European, 1870-1930 Apparatus for transfer of electrostatic charge by induction 1870-1930
Doll's head, plaster, wax-filled, metal strip and 8 swatches of hair on head, used in electrical experiments, European, 1870-1900 Doll's head 1870-1900