The Red-belly snake (Storeria occipitomaculata) is a relatively small snake that rarely exceeds 12 inches in length. It is native to North America, Mexico and Central America, and it is NOT venomous.
The electromagnetic frequency of a wave is defined as how many times the peak of this oscillation moves past a point each second. This has a major effect on the properties of the wave, including its energy.
Arendt-Nielsen L, Mills KR. Models of the behaviour of the surface EMG signal during fatigue have assumed that there is a linear relationship between the mean power frequency of the EMG spectrum and muscle fibre conduction velocity.