RPM is an abbreviation of revolutions per minute, a measure of rotation frequency.

Ve instructed the analyzer to shift to a much higher rotation frequency.

Soft Foot usually gives rise to a 1x Harmonic of the rotation frequency in the spectrum when Radial (Horizontal or Vertical) vibration measurements are taken.

Rotational-vibrational coupling occurs when the rotation frequency of an object is close to or identical to a natural internal vibration frequency.

By humming at a frequency of a multiple of the rotation frequency, he was able to stop the rotation.

Therefore, when detecting the resonant rotation frequency, there is a linewidth (i.e., finite range of different frequencies) due to the variation in that resonant frequency from point to point.

As a consequence, when detecting the resonant rotation frequency, the linewidth is smaller (narrower) than it would be if the atoms were stationary.

Consequently, the rotation frequencies in each vibration state are different from each other.

We also see that the frequency of the wave given off is twice the rotation frequency.

SWIFT J1756.9-2508 is a millisecond pulsar with a rotation frequency of 182 Hz (period of 5.5 ms).