Wavenumber Wavenumber In the physical sciences, the wavenumber (also wave number or repetency) is the spatial frequency of a wave, measured in cycles per unit distance or radians per unit distance. Whereas temporal frequency can be thought of as the number of waves per unit time, wavenumber is the number of waves per unit distance. In multidimensional systems, the wavenumber is the magnitude of the wave vector. The space of wave vectors is called reciprocal space. Wave numbers and wave vectors play an essential role in optics and the physics of wave scattering, such as X-ray diffraction, neutron diffraction, and elementary
Motor unit number estimation the death of motor fibres, but the number of motor units remains the same until the disease progresses to a very severe state. In collaboration with other electromyography techniques, these conditions can be diagnosed and monitored. In a similar vein, normal aging also reduces the number of motor units but not to the same degree as disease. The effects of injury depend on the circumstances. Motor unit number estimation Motor Unit Number Estimation (MUNE) is a technique that uses electromyography to estimate the number of motor units in a muscle. A motor unit consists of one alpha motor neuron and