Elementary charge is . Robert A. Millikan's oil drop experiment first measured the magnitude of the elementary charge in 1909. In some natural unit systems, such as the system of atomic units, "e" functions as the unit of electric charge, that is "e" is equal to 1 e in those unit systems. The use of elementary charge as a unit was promoted by George Johnstone Stoney in 1874 for the first system of natural units, called Stoney units. Later, he proposed the name "electron" for this unit. At the time, the particle we now call the electron was not yet discovered and
Aodh (given name) may be reinterpreted as even in that spellinɡ. Aodh (given name) Aodh (; ) is an Irish and Scottish Gaelic male given name, originally meaning "fire". Feminine forms of the name include Aodhnait and Aodhamair. It appears in even more variants as a surname. As a surname, the root or a variant may be prefixed by "O", "Ó", or "Ui" (meaning "from" or "descendant of"), "Mac" or "Mc" (meaning "son of"), or "Nic" (meaning "daughter of"). The name was originally related to an Irish god of the underworld. The masculine given name Hugh is a common anglicization, although the names