03_metric-reference

03_metric-reference - Prof. Welsh Astronomy Notes Tools &...

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Working in the Metric (SI) System Common multiples expressed in prefixes: centi- ± ( x 10 -2 ) Example: 1 cm = 0.01 m micro- ± ( x 10 -6 ) Example: 1 m = 0.000 001 m nano- ± ( x 10 -9 ) Example: 1 nm = 0.000 000 001 m kilo- ± ( x 10 3 ) Example: 1 kg = 1000 g Mega- ± ( x 10 6 ) Example: 1 Mbyte = 1,000,000 bytes Giga- ± ( x 10 9 ) Example: 1 Gbyte SI prefixes Factor Prefix Symbol Factor Prefix Symbol 10 24 Yotta Y 10 -1 deci d 10 21 Zeta Z 10 -2 centi c 10 18 Exa E 10 -3 milli m 10 15 Peta P 10 -6 micro 10 12 Tera T 10 -9 nano n 10 9 Giga G 10 -12 pico p 10 6 Mega M 10 -15 femto f 10 3 Kilo K 10 -18 ato a 10 2 Hector H 10 -21 zepto z 10 1 Deka Da 10 -24 yocto y NOT Working in the Metric System: Astronomical Unit (AU) = 1.496 x 10 11 m Light year (lt-yr) = 9.461 x 10 15 m Parsec (pc) = 3.086 x 10 16 m = 3.26 lt-yr Angstrom (
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This note was uploaded on 01/12/2012 for the course ASTRO 310 taught by Professor Williamwelsh during the Fall '08 term at San Diego State.

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03_metric-reference - Prof. Welsh Astronomy Notes Tools &...

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