| Term: | Magnitude |
| Definition: |
A measure of the strength of a vectorquantity or length of its representational vector. |
| Term: | Magnitude |
| Definition: |
A measure of brightness in astronomy on a logarithmic scale in which a difference of five magnitudes represents a difference of 100 times in brightness. In this scale the lower a magnitude, the brighter the object. The faintest magnitude reached by unaided eye is 6. |