A Quick reference
A Dictionary of Weights, Measures, and Units
Metric As a lower-case prefix a-, see atto-.
length. Metric Correctly Å, see angstrom.
area. As a, see are; see ...
a.u. Quick reference
A Dictionary of Weights, Measures, and Units
sub-atomic physics. See atomic unit.
aanom Quick reference
A Dictionary of Weights, Measures, and Units
[annum]
time. Anomalistic year; see anomalistic and year.
ab- Quick reference
A Dictionary of Physics (8 ed.)
A prefix attached to the name of a practical electrical unit to provide a name for a unit in the electromagnetic system of units (...
abampere Quick reference
A Dictionary of Weights, Measures, and Units
[absolute ampere]
(biot) electric current. Symbol abA. Metric-c.g.s.-e.m.u 1 abA = the constant current that produces, when maintained in two parallel conductors of negligible ...
More
abcoulomb Quick reference
A Dictionary of Weights, Measures, and Units
electric charge. Symbol abC. Metric-c.g.s. The absolute coulomb of the e.m.u. system, for a steady current identically s⋅abA. 1 abC = 10 C....
abdaraf Quick reference
A Dictionary of Weights, Measures, and Units
electric elastance. Symbol abD. Metric-c.g.s. The absolute daraf of the e.m.u. system, for a steady current identically abV/abC, and identically reciprocal abfarard. 1 abD = 1 abF...
aberration
n. (in optics) a defect in the image formed by an optical device (e.g. a lens). In chromatic aberration the image has coloured fringes as a result of the different extent to which light of different ...
