Electrical phenomena: electricity is positive and negative. Theory by Benjamin Franklin on the two electricities, one glass (the positive) and the other resinator (the negative). Anonymous illustration from 1925. Private collection.(Electrical phenomena: electricite is positive and negative. Theory by Benjamin Franklin (1706-1790) on the two electricites, one glass (the positive) and the other resinator (the negative). Anonymous illustration from 1925. Private collection.)Anonymous Anonymous |
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Undated · Engraving
· Picture ID: 1048025
colour · colours · engraving · physical · physicist · knowledge · human · history · franklin · 18 18th 18th 18th xviii 18th century · electricity · benjamin (1706-1790) · bianchetticor · energy · energy · Private Collection / Bridgeman Images |
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