H0 (H followed by zero) or H00 may refer to: * H0 scale, used in rail transport modelling * Higgs boson, in physics, symbol H⁰ * Hammett acidity function, in chemistry, H₀ *

Hubble constant Hubble's law, also known as the Hubble–Lemaître law, is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance. In other words, the farther they are, the faster they are moving ...

, in cosmology, H₀ *

Null hypothesis In scientific research, the null hypothesis (often denoted ''H''0) is the claim that no difference or relationship exists between two sets of data or variables being analyzed. The null hypothesis is that any experimentally observed difference is d ...

, in statistics, often denoted H₀ * , a British and later Canadian warship *

Stye A stye, also known as a hordeolum, is a bacterial infection of an oil gland in the eyelid. This results in a red tender bump at the edge of the eyelid. The outside or the inside of the eyelid can be affected. The cause of a stye is usually a b ...

, a bacterial infection of the eyelid, ICD-10 code H00

See also