100y or 1-H may refer to:

Science

Hydrogen Hydrogen is a chemical element; it has chemical symbol, symbol H and atomic number 1. It is the lightest and abundance of the chemical elements, most abundant chemical element in the universe, constituting about 75% of all baryon, normal matter ...

(₁H), a chemical element *1H, a number of chemical compounds with one

hydrogen Hydrogen is a chemical element; it has chemical symbol, symbol H and atomic number 1. It is the lightest and abundance of the chemical elements, most abundant chemical element in the universe, constituting about 75% of all baryon, normal matter ...

atom *

Hydrogen-1 Hydrogen (H) has three naturally occurring isotopes: H, H, and H. H and H are stable, while H has a half-life of years. Heavier isotopes also exist; all are synthetic and have a half-life of less than 1 zeptosecond (10 s). Of these, H is ...

(¹H, or Protium), an isotope of hydrogen *1H, a grouping within an

Astronomical catalog An astronomical catalogue is a list or tabulation of astronomical objects, typically grouped together because they share a common type, Galaxy morphological classification, morphology, origin, means of detection, or method of discovery. The olde ...

**1H 1617-155, a designation for the

Scorpius X-1 Scorpius X-1 is an X-ray source located roughly 9000 light years away in the constellation Scorpius. Scorpius X-1 was the first extrasolar X-ray source discovered, and, aside from the Sun, it is the strongest apparent non-transient source of X-ra ...

X-ray source **1H 1908+047, a designation for the

SS 433 SS 433 is a microquasar or eclipsing X-ray binary system, consisting of a stellar-mass black hole accreting matter from an A-type companion star. SS 433 is the first discovered microquasar. It is at the centre of the supernova remnant ...

star system *

Astra 1H Astra 1H is one of the Astra communications satellites owned and operated by SES. History SES ordered its Hughes 601HP satellite, in 1995 for Astra 1H. Launch Astra-1H was launched on 18 June 1999 at 01:49:30 UTC, by a Proton-K / DM-2 ...

, an SES satellite launched in 1999

Other uses

*1H, a model of

Nissan H engine The Nissan H series of automobile engines is an evolution of the Nissan "R" engine which was based on the 1.5-liter, three-main bearing "G" engine used in the 1960s. Both inline-four and inline-six versions were produced. It is a pushrod OHV desig ...

*1H NMR, a type of

Proton NMR Proton nuclear magnetic resonance (proton NMR, hydrogen-1 NMR, or 1H NMR) is the application of nuclear magnetic resonance in NMR spectroscopy with respect to hydrogen-1 nuclei within the molecules of a substance, in order to determine the stru ...

*1 H. Cas, a variant notation for

AR Cassiopeiae AR Cassiopeiae (AR Cas) is a variable star in the constellation of Cassiopeia (constellation), Cassiopeia. It is thought to be a member of a multiple star system, septuple star system, one of only two known star systems with a multipl ...

*UH-1H, a type of

Bell UH-1 Iroquois The Bell UH-1 Iroquois (nicknamed "Huey") is a utility military helicopter designed and produced by the American aerospace company Bell Helicopter. It is the first member of the prolific Huey family, as well as the first turbine-powered hel ...

*Campath-1H, a brand of

Alemtuzumab Alemtuzumab, sold under the brand names Campath and Lemtrada among others, is a medication used to treat chronic lymphocytic leukemia and multiple sclerosis. In chronic lymphocytic leukemia, it has been used as both a first line and second lin ...

*Ardiden 1H, a model of

HAL/Turbomeca Shakti The Safran Ardiden is a turboshaft designed and produced by Safran Helicopter Engines for single and twin-engine helicopters. Launched in 2003 as a more powerful TM 333, it first ran in 2005 and was introduced in 2007. The Ardiden 1 ''Shakt ...

Blendkörper 1H The Blendkörper 1H was a non-lethal smoke grenade that was developed by Germany and used by the Wehrmacht during World War II. Design The Blendkörper 1H consisted of a glass bulb sealed with plaster of paris roughly the size of a light bulb bu ...

, smoke grenade used by Germany in World War II *SSH 1H, alternate name for Washington State Route 534 *1H, one

hour An hour (symbol: h; also abbreviated hr) is a unit of time historically reckoned as of a day and defined contemporarily as exactly 3,600 seconds ( SI). There are 60 minutes in an hour, and 24 hours in a day. The hour was initially establis ...

*1H Year, 1st half of year

Science

Other uses

See also