Since the beginning of the study of electricity non conductive materials like glass, porcelain, paper and mica have been used as insulators. These materials some decades later were also well-suited for further use as the dielectric for the first capacitors. Paper capacitors made by sandwiching a strip of impregnated paper between strips of metal, and rolling the result into a cylinder were commonly used in the late 19century; their manufacture started in 1876, and they were used from the early 20th century as decoupling capacitors in telecommunications (telephony). COUNT 5
QSN1 Besides porcelain, paper and mica, what other non conductive material was used as an insulator?  ANS1 glass QSN2 For what use were non conductive materials used in the first capacitors? ANS2 as the dielectric QSN3 What was layered between strips of metal in order to create paper capacitors? ANS3 strip of impregnated paper QSN4 When were paper capacitors first manufactured? ANS4 in 1876 QSN5 What other use did paper capacitors serve in the telecommunications industry? ANS5 as decoupling capacitors