GH

GH, Gh, gh, or .gh may refer to:

General Hospital

General Hospital (commonly abbreviated GH) is an American daytime television medical drama that is listed in Guinness World Records as the longest-running American soap opera in production and the third longest-running drama in television in American history after Guiding Light and As the World Turns. Concurrently, it is the world's third longest-running scripted drama series in production after British serials The Archers and Coronation Street, as well as the world's second-longest-running televised soap opera still in production. General Hospital premiered on the ABC television network on April 1, 1963. Same-day broadcasts as well as classic episodes were aired on SOAPnet from January 20, 2000 to December 31, 2013, following Disney-ABC's decision to discontinue the network. General Hospital is the longest-running serial produced in Hollywood, and the longest-running entertainment program in ABC television history. It holds the record for most Daytime Emmy Awards for Outstanding Drama Series, with 11 wins.

IG

IG, Ig, or ig may refer to:

Biomedical or technology

Companies

Games

H I region

An HI region (read H one) is a cloud in the interstellar medium composed of neutral atomic hydrogen (HI), in addition to the local abundance of helium and other elements. These regions do not emit detectable visible light (except in spectral lines from elements other than hydrogen) but are observed by the 21-cm (1,420 MHz) region spectral line. This line has a very low transition probability, so requires large amounts of hydrogen gas for it to be seen. At ionization fronts, where HI regions collide with expanding ionized gas (such as an H II region), the latter glows brighter than it otherwise would. The degree of ionization in an HI region is very small at around 10⁻⁴ (i.e. one particle in 10,000). At typical interstellar pressures in galaxies like the Milky Way, HI regions are most stable at temperatures of either below 100 K or above several thousand K; gas between these temperatures heats or cools very quickly to reach one of the stable temperature regimes. Within one of these phases, the gas is usually considered isothermal, except near an expanding H II region. Near an expanding H II region is a dense HI region, separated from the undisturbed HI region by a shock front and from the H II region by an ionization front.

Ha

Ha may refer to:

Science and measurement

Medicine

Linguistics

Mathematics

Media