SI Unit prefixes

["Peter Fundarek" <p.fundarek@utoronto.ca>]

Just to add to what Emelie Lamothe wrote:

The SI unit prefixes are as follows:

Y	yotta		1E+24
Z	zetta		1E+21
E 	exa     	1E+18
P 	peta    	1E+15
T 	tera     	1E+12
G 	giga    	1E+09
M 	mega  	1E+06
k 	kilo      	1E+03
h 	hecto   	1E+02
da	deca       	1E+01
d 	deci      	1E-01
c  	centi    	1E-02
m 	milli      	1E-03
u  	micro    	1E-06
n  	nano     	1E-09
p  	pico      	1E-12
f	femto	1E-15
a	atto		1E-18
z	zepto	1E-21
y 	yocto	1E-24

The last prefix is very useful for describing the size of a barn.

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Regards,
Peter J. Fundarek
Chief Radiation Protection Officer
University of Toronto
Canada

email:  p.fundarek@utoronto.ca
phone:  (416) 978-2374
fax:    (416) 971-1384
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