Z0, Z₀ or Z⁰ may refer to: *

Characteristic impedance The characteristic impedance or surge impedance (usually written Z0) of a uniform transmission line is the ratio of the amplitudes of voltage and current of a wave travelling in one direction along the line in the absence of reflections in th ...

, a ratio used in electronics *

Impedance of free space In electromagnetism, the impedance of free space, , is a physical constant relating the magnitudes of the electric and magnetic fields of electromagnetic radiation travelling through free space. That is, Z_0 = \frac, where is the electric fie ...

, a physical constant *

Z boson In particle physics, the W and Z bosons are vector bosons that are together known as the weak bosons or more generally as the intermediate vector bosons. These elementary particles mediate the weak interaction; the respective symbols are , , and ...

, an elementary particle that mediates the weak force * a rare rail transport modelling scale *

Roughness length Roughness length (z_0) is a parameter used in modeling the horizontal mean wind speed near the ground. In wind vertical profile such the log wind profile, the roughness length (with dimension of length and SI unit of metres) is equivalent to the ...

, a factor used in wind speed calculations *

Z0 sex-determination system The ZO sex-determination system is a system that determines the sex of offspring in caddisflies and several moths. In those species, there is one sex chromosome, Z. Males have two Z chromosomes, whereas females have one Z. Males are ZZ, while fe ...

in some moth species, also referring to biological females under this system

See also