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a-

a-   Quick reference

A Dictionary of Weights, Measures, and Units

Reference type:
Subject Reference
Current Version:
2004

Metric As symbol see A, a.

A

A   Quick reference

A Dictionary of Weights, Measures, and Units

Reference type:
Subject Reference
Current Version:
2004

Metric As a lower-case prefix a-, see atto-.

length. Metric Correctly Å, see angstrom.

area

aanom

aanom   Quick reference

A Dictionary of Weights, Measures, and Units

Reference type:
Subject Reference
Current Version:
2004

[annum]

time. Anomalistic year; see anomalistic and year.

aastr

aastr   Quick reference

A Dictionary of Weights, Measures, and Units

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Subject Reference
Current Version:
2004

time. Astronomical year.

ab-

ab-   Quick reference

A Dictionary of Physics (7 ed.)

Reference type:
Subject Reference
Current Version:
2015
Subject:
Science and technology, Physics
Length:
68 words

A prefix attached to the name of a practical electrical unit to provide a name for a unit in the

abampere

abampere   Quick reference

A Dictionary of Weights, Measures, and Units

Reference type:
Subject Reference
Current Version:
2004

[absolute ampere]

(biot) electric current. Symbol abA. Metric-c.g.s.-e.m.u 1 abA = the constant current that produces, when

abcoulomb

abcoulomb   Quick reference

A Dictionary of Weights, Measures, and Units

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Current Version:
2004

electric charge. Symbol abC. Metric-c.g.s. The absolute coulomb of the e.m.u. system, for a steady current identically s⋅abA.

abdaraf

abdaraf   Quick reference

A Dictionary of Weights, Measures, and Units

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Current Version:
2004

electric elastance. Symbol abD. Metric-c.g.s. The absolute daraf of the e.m.u. system, for a steady current identically abV/abC,

aberration

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 ...
aberration

aberration   Quick reference

A Dictionary of Physics (7 ed.)

Reference type:
Subject Reference
Current Version:
2015
Subject:
Science and technology, Physics
Length:
215 words
Illustration(s):
1

1. (in optics) A defect in the image formed by a lens or curved mirror. In chromatic aberration the image

abfarad

abfarad   Quick reference

A Dictionary of Weights, Measures, and Units

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Current Version:
2004

electric capacitance. Symbol abF. Metric-c.g.s. The absolute farad of the e.m.u. system, for a steady current identically abC/abV,

abhenry

abhenry   Quick reference

A Dictionary of Weights, Measures, and Units

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Current Version:
2004

electromagnetic inductance. Symbol abH. Metric-c.g.s. The absolute henry of the e.m.u. system, for a steady current identically abV/abA/second.

abmho

abmho   Quick reference

A Dictionary of Weights, Measures, and Units

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Current Version:
2004

electric conductance. Metric-c.g.s. The absolute mho of the e.m.u. system, for a steady current identically abA/abV, and identically

abohm

abohm   Quick reference

A Dictionary of Weights, Measures, and Units

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2004

electric resistance. Symbol abΩ. Metric-c.g.s. The absolute ohm of the e.m.u. system, for a steady current identically abV/abA,

absolute

absolute   Quick reference

A Dictionary of Weights, Measures, and Units

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Current Version:
2004

Within metrology generally, the qualifier ‘absolute’ indicates using mass rather than weight, i.e. force, as a basic dimension; hence an

absolute

absolute   Quick reference

A Dictionary of Physics (7 ed.)

Reference type:
Subject Reference
Current Version:
2015
Subject:
Science and technology, Physics
Length:
78 words

1. Not dependent on or relative to anything else, e.g. *absolute zero.

2. Denoting a temperature measured on

absolute space

absolute space  

Space that exists as a background to events and processes and is not affected by objects or other entities in the universe. The idea underpins Newtonian physics, although many physicists have always ...
absolute time

absolute time  

Time that exists independently of any events or processes in the universe. Like absolute space, absolute time is a basic concept in Newtonian physics.
absolute centesimal thermodynamic  scale

absolute centesimal thermodynamic scale   Quick reference

A Dictionary of Weights, Measures, and Units

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Subject Reference
Current Version:
2004

temperature. See kelvin scale.

absolute magnitude

absolute magnitude   Quick reference

A Dictionary of Weights, Measures, and Units

Reference type:
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Current Version:
2004

astronomy. Symbol M. See stellar magnitude.

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