The unit of inductance in the centimeter-gram-second electromagnetic system of units. Symbol, abH. A circuit has an inductance of 1 abhenry if a current changing at the rate of 1 abampere per second induces an electromotive force of 1 abvolt in it. By the 1940s use of this unit was being discouraged. One abhenry = 1 × 10⁻⁹ henry.

According to the current national standard in the United States¹, the abhenry is not to be used. The henry should be used instead.

1. IEEE/ASTM SI 10™-2002.
American National Standard for Use of the International System of Units (SI): The Modern Metric System.
New York: IEEE, 30 December 2002.

See Section 3.3.3.


For an excellent history of the development of the electric and magnetic units up to 1913, see U. S. Bureau of Standards Circular 60.

Sorry. No information on contributors is available for this page.

home | units index  | search |  contact drawing of envelope | contributors | 
help | privacy | terms of use