看板Biology
标 题Re: 剂量单位
发信站奇摩大摩域 (Wed Aug 16 17:35:26 2000)
转信站Ptt!bbs.ee.ntu!news.ee.ntu!freebsd.ntu!news.cs.nthu!bbsnews.kimo.com.t
※ 引述《flamingo (闲云野鹤(♂31))》之铭言：
> ※ 引述《[email protected] (爆杀鬼)》之铭言：
> > 请问一下,10的负九次方不是"n"吗?
> ya.... pico- 应该是 10的-12次方....10的-9次方是 nano-
顺便复习一下定量单位的表示好了:P
prefix decimal binary
kilo- 10^3 1024^1 = 2^10 = 1,024
mega- 10^6 1024^2 = 2^20 = 1,048,576
giga- 10^9 1024^3 = 2^30 = 1,073,741,824
tera- 10^12 1024^4 = 2^40 = 1,099,511,627,776
peta- 10^15 1024^5 = 2^50 = 1,125,899,906,842,624
exa- 10^18 1024^6 = 2^60 = 1,152,921,504,606,846,976
zetta- 10^21 1024^7 = 2^70 = 1,180,591,620,717,411,303,424
yotta- 10^24 1024^8 = 2^80 = 1,208,925,819,614,629,174,706,176
milli- 10^-3
micro- 10^-6
nano- 10^-9
pico- 10^-12
femto- 10^-15
atto- 10^-18
zepto- 10^-21
yocto- 10^-24
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