Magnitude
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Magnitude may refer to:
- Magnitude (mathematics), a measure of the size of a mathematical object:
- A vector object has both magnitude and direction as its defining characteristics.
- A scalar object has only magnitude as its defining characteristic.
In astronomy:
- A logarithmic measure of the brightness of an astronomical object:
- Ancient magnitude system
- Modern magnitude system
- Apparent magnitude
- Apparent Photographic magnitude (Symbol mpg)
- Apparent Photovisual magnitude (Symbol mpv)
- Apparent Bolometric magnitude (Symbol mb)
- Absolute magnitude
- Absolute Photographic magnitude (Symbol Mpg)
- Absolute Photovisual magnitude (Symbol Mpv)
- Absolute Bolometric magnitude (Symbol Mb)
- Apparent magnitude
- Magnitude of an eclipse
In seismology:
- Either of two measures of earthquake strength:
- Richter magnitude scale (including the surface-wave Ms and body wave Mb magnitudes)
- Moment magnitude scale
Other:
[edit] See also
- Order of magnitude, a coarse measure of numerical size