 |
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
|
|
photographic magnitude
The magnitude of a celestial object as measured on a photographic emulsion – a method of measuring apparent brightness that is now obsolete. Because emulsions are especially sensitive in the blue region of the spectrum, a blue star records as being brighter than a red star of the same apparent visual magnitude.
Related category
• ASTRONOMICAL QUANTITIES
Also on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History
Transport Concepts & Designs (partner site)