Electricity at rest upon the surface of a non-conductor or upon the surface of a completely insulated conductor is commonly called a static charge of electricity. As has been explained by the writer in a previous article in the Science Bulletin, a static charge is negative when it consists of an aggregate of electrons and positive when it consists of an aggregate of unneutralized protons.
©1931 by Iowa State Teachers College
"The Nature of an Electric Current,"
Science Bulletin: Vol. 3:
6, Article 9.
Available at: https://scholarworks.uni.edu/science_bulletin/vol3/iss6/9