absolute magnitude

(redirected from Absolute brightness)
Also found in: Dictionary, Thesaurus.

absolute magnitude:

see magnitudemagnitude,
in astronomy, measure of the brightness of a star or other celestial object. The stars cataloged by Ptolemy (2d cent. A.D.), all visible with the unaided eye, were ranked on a brightness scale such that the brightest stars were of 1st magnitude and the dimmest stars
..... Click the link for more information.
.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

absolute magnitude

See magnitude.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

absolute magnitude

[′ab·sə‚lüt ′mag·nə·tüd]
(astrophysics)
A measure of the brightness of a star equal to the magnitude the star would have at a distance of 10 parsecs from the observer.
The stellar magnitude any meteor would have if placed in the observer's zenith at a height of 100 kilometers.
(mathematics)
The absolute value of a number or quantity.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
"Max" Maxin IV "The Absolute Brightness of Leonard Pelkey" American Blues Theater
Absolute Brightness: For the first test item, we tested consistent illumination with and without random ambient light.
If we make a scatter plot of color versus absolute brightness (luminosity), most stars fall roughly on a line, called the main sequence.
A large majority of the feline neurons tracked by Rossi's team showed the same electrical responses in the two trials to squares of equal perceived brightness, at least as judged by humans, rather than absolute brightness.