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标 题Re: [问题] 请问rpm与g之换算
发信站中兴天枢 (Mon Sep 18 09:30:14 2006)
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※ 引述《[email protected] ( )》之铭言：
> ※ 引述《[email protected] (挖拍狼欧！！)》之铭言：
> > 现在的年轻人连估购都不会用！真糟糕！
> > http://www.msu.edu/~venkata1/gforce.htm
请问...能用物理离心力公式推导出此方程是吗？
我用 F＝V^2/R (V＝2ΠR/T)去推算
不论怎麽单位换算 就是算不出下面公式 XD
请大大帮帮忙^^
> 嗯... 其实也许他只是不知该用哪些词来找到所需要的东西
> 放上换算公式
> 转自 http://www.piercenet.com/files/TR0040dh4-Centrifuge-speed.pdf
> Certain procedures necessitate precise centrifugation conditions, which must be
> specified in terms of relative centrifugal force (RCF) expressed in units of
> gravity (times gravity or x g). Many microcentrifuges only have settings for
> speed (revolutions per minute, RPM), not relative centrifugal force.
> Consequently, a formula for conversion is required to ensure that the
> appropriate setting is used in an experiment. The relationship between RPM
> and RCF is as follows:
> g = (1.118 * 10^-5) * R * S^2
> Where g is the relative centrifugal force, R is the radius of the rotor in
> centimeters, and S is the speed of the centrifuge in revolutions per minute.
> Values of RCF in units of times gravity (x g) for common microcentrifuge rotor
> radii appear in the following conversion table. As an example, centrifugation
> of a sample at 5,000 RPM in a microcentrifuge that has a rotor with a radius of
> 7 cm will deliver a centrifugal force of 1,957 x g.
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