. American X-ray journal . Inventor of the First Electric Machine, three centuries ago by Otto Guer-icke, a Burgomaster in Magdensburg,Holland, who invented and manufac-. » % \ I. First Electric Machine, L671 A. I),ttired the first static machine in discovered the principles of attrac-tion and repulsion, also conduction anda spark, his machine being a sulphurball revolving in trunions. In invent-ing this machine Guericke discovered all of the currents which have been calledby many names since. The next inventor was Newton, whosubstituted a glass ball in place of thesu
. American X-ray journal . Inventor of the First Electric Machine, three centuries ago by Otto Guer-icke, a Burgomaster in Magdensburg,Holland, who invented and manufac-. » % \ I. First Electric Machine, L671 A. I),ttired the first static machine in discovered the principles of attrac-tion and repulsion, also conduction anda spark, his machine being a sulphurball revolving in trunions. In invent-ing this machine Guericke discovered all of the currents which have been calledby many names since. The next inventor was Newton, whosubstituted a glass ball in place of thesulphur one. Later Hawksby discov-ered the electric glow or electric lightand he brought it prominently beforethe public. Subsequently there were aseries of balls used together, and in1731 Gray made extensive experimentsin producing electricity by rubbing aglass rod, and charging bodies sus-pended by silk ropes. From that time on various styleswere introduced one of which had aglass cylinder, another a glass plate
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