Hello everyone. I found out that the Rpm unit is not revolutions per minute, but radians per minute. So, could you please fix Russian localization from "об/мин" (обороты в минуту - revolutions per minute) for (радиан/минуту - radians). 21 pages of calculations became wrong when I realized it. Thanks a lot.
Alan
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It's not only the Russian localization that names it reolutions. English, Prime4:
Since it is susceptible to misunderstanding (see: https://en.wikipedia.org/wiki/Revolutions_per_minute), It's always best to first try out what a unit means (see above), before using it.
Success!
Luc
Revolutions per minute Unit of Rotational speed, rotational frequency Symbol rpm, r/min 1 rpm in ... ... is equal to ... SI accepted units 1 min −1 SI units 1 / 60 Hz = 0.016 Hz SI base units 0.016 s −1 Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or ) is a unit of rotational ...
Since I worked with rotating machinery (and FFT's a lot) I usually defined a new unit:
I could then plot FFT frequencies in RPM that would correlate with the rotating speeds in rpm.
(Managers NEVER challenged the difference, only engineers trying to use Mathcad ever did.)
