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
Per-unit system are the same. Here, the per-unit voltages of the two sides are E and E respectively. formula_28 ‘E and E are the voltages of sides 1 and 2 in volts. N is the number of turns the coil on side 1 has. N is the number of turns the coil on side 2 has. V and V are the base voltages on sides 1 and 2. formula_29 For current, we can prove that the per-unit currents of the two sides are the same below. formula_30 where I and I are the per-unit currents of sides 1 and 2 respectively. In