Introduction to electromagnetism is a quantity used to determine how a particle will behave in an electric field. There are three possible "types" of charge: positive, negative, and neutral. However, the distinction between positive and negative is by convention only. Electric charge is quantized in units of the elementary charge, formula_1, where a proton has a charge of formula_2 and an electron has a charge of formula_3. The SI unit of charge is the coulomb. The elementary charge formula_1 was first measured by Robert Millikan in his oil drop experiment in which the electric force on the particle is set to exactly counter
Graham (given name) settlements of smaller size than villages. In the 12th century the surname was taken from England to Scotland by Sir William de Graham, who founded Clan Graham. Variant spellings of the forename are "Grahame" and "Graeme". The forename "Graham" is considered to be an English and Scottish given name. Its origin as a surname has led to its occasional use as a female given name, as for example in the case of Graham Cockburn, a daughter of Henry Cockburn, Lord Cockburn. Graham (given name) Graham () is a masculine given name in the English language. According to some sources, it