Benjamin Franklin (1706-1790) [Wikipedia] One Kinds of Electrical Fluids: Positive (+) and Negative (-) Electricity

1747

[Secondary Source] (ed.) Robert G Fuller A Love of Discovery. Science Education--The Second Carrier of Robert Karplus (Kluwer Academic, New York, NY, 2002) pp. 288-290. [Primary Source] Benjamin Franklin Letter to Peter Collinson (July 11, 1747) Wonderful Effect of Points.---Positive and Negative Electricity.---Electrical Kiss.---Counterfeit Spider.---Simple and commodious Electrical Machie. in Jared Sparks The Works of Benjamin Franklin. Volume V. (Hilliard, Gray, and Co., Boston, 1840) p. 181-188. [Google] [Google] [Archive]