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Thomas Alva Edison
UMG22A47_204

Thomas Alva Edison

Electric pendulum
UMG22A44_175

Electric pendulum

Electrophorus is a form of historical Influence machine and is used to separate electrical charges and produce high electrical voltages by means of Influence
UMG22A44_176

Electrophorus is a form of historical Influence ma...

Electrical engineering
UMG22A44_177

Electrical engineering

Rotating apparatus according to Stöhrer
UMG21A09_100

Rotating apparatus according to Stöhrer

Electrical engineering
UMG21A11_193

Electrical engineering