Triumphs and Wonders of the 19th Century: The True Mirror of a Phenomenal Era / A volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress

by James P. Boyd

Current = Electro-motive force / Resistance

or,

Electro-motive force = Current × Resistance

or

Resistance = Electro-motive force / Current.

Erg:—From the Greek ergon, work, is the unit of work required to move a force of one dyne one centimetre. One foot-pound equals 13,560 ergs.

Calorie:—Latin calor, heat, is the unit of heat; being the amount of heat required to raise the temperature of one kilogram of water one degree centigrade.

Coulomb:—In honor of C. A. de Coulomb, of France. It is the practical unit of quantity in measuring electricity, and is the amount conveyed by one ampere in one second.

Farad:—From Faraday, the physicist. It is the unit of electric capacity, and is the capacity of a condenser that retains one coulomb of charge with one volt difference of potential.

Gauss:—From Carl F. Gauss (1785–1855). The C. G. S. unit of flux-density, or the unit by which the intensity of magnetic fields are measured. It equals one weber per normal square centimetre.