C. F. Du Fay

Charles Fran?ois de Cisternay du Fay

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

(Paris, September 14,1698 – 1739) was a French chemist and superintendent of the Jardin du Roi.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

He discovered the existence of two types of electricity and named them "vitreous" and "resinous" (later known as positive and negative charge respectively.) He noted the difference between conductors and insulators, calling them 'electrics' and 'non-electrics' for their ability to produce contact electrification. He also discovered that alike-charged objects would repel each other.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

September 14: September 14 is the 257th day of the year in the Gregorian calendar (258th in leap years). There are 108 days remaining....

French: French can refer to more than one article:...

Chemist: A chemist is a scientist trained in the science of chemistry. Chemists may specialize in any number of subdisciplines of chemistry. In Commonwealth English, chemist may also refer to a dispensing chemist,a pharmacist, or a general retailer of chemicals (usually for medicinal purposes)....

C. F. Du Fay related Images and Photos (experimental)

Fay Spain	Fay Spain	Marguerite Dufay	Thé du Soir
Buvez du Vin	Buvez du Vin	Madone Du Lac	Cafe du Matin
Rue du Tresor	Pointe du Van	Cafe Du Monde	Canal Du Midi