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r.p.m. or gravity?

peter Herman rpeter at nmsu.edu
Wed Jan 28 18:57:45 EST 1998

Arturo Sanchez wrote:
> Can someone answer me the next question? How should I report the
> centrifugation speed r.p.m or gravity? Which one is correct? I have
> a discussion with a friend about this. I am reporting my methodology in
> r.p.m. but he says I should do it in g. I understand that r.p.m. are a
> unit of angular velocity equal to the uniform angular velocity of a body
> which rotates through an angle of 360° (2pi radians), so that every point
> in the body returns to its original point, in 1 minute. For me the key is
> in the "...uniform angular velocity". Am I right?

Report g! That way anyone can duplicate your method inedpendant of the
instrument that they have.  1000x g could be 2000 rpm on one centrifuge
and 800 rpm on another depending on the rotor dimensions.

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