Frequency
number of occurrences or cycles per time
heart rate
harmonic
rotational speed
fundamental frequency
utility frequency
resonance frequency
audio frequency
cutoff frequency
Nyquist frequency
500 kHz
signal bandwidth
passband
cyclotron frequency
deflection frequency
sampling rate
radio frequency
allele frequency
collision frequency
Matsubara frequency
respiratory rate
frequency
bass
clock rate
natural frequency
refresh rate