S.I. Prefixes
Category : 11th Class
In physics we deal from very small (micro) to very large (macro) magnitudes, as one side we talk about the atom while on the other side of universe, e.g., the mass of an electron is 9.1 x 10-31 kg while that of the sun is 2 x 1030 kg. To express such large or small magnitudes we use the following prefixes : Prefixes and symbol
Power of 10 | Prefix | Symbol |
1018 | exa | E |
1015 | peta | P |
1012 | tera | T |
109 | giga | G |
106 | mega | M |
103 | kilo | k |
102 | hecto | h |
101 | deca | da |
10-1 | deci | d |
10-2 | centi | c |
10-3 | milli | m |
10-6 | micro | m |
10-9 | nano | n |
10-12 | pico | p |
10-15 | femto | f |
10-18 | atto | a |
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