# H1

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> Markdown URL: https://mediated.wiki/source/H1.md
> Source: https://en.wikipedia.org/wiki/H1
> Source revision: 1343151829
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**H1**, **H-1**, **H01**, **H I** may refer to:

## Places

- [Interstate H-1](/source/Interstate_H-1), a highway in Hawaii
- Area H1, the area of Hebron controlled by the Palestinian Authority under the [Hebron Protocol](/source/Protocol_Concerning_the_Redeployment_in_Hebron)

## Science

- [H1 (particle detector)](/source/H1_(particle_detector))
- [Histamine H1 receptor](/source/Histamine_H1_receptor)
- [Histone H1](/source/Histone_H1), a protein

- [British NVC community H1](/source/British_NVC_community_H1), a heath zone
- [Hydrogen atom](/source/Hydrogen_atom) (H1)
- [Protium (isotope)](/source/Protium_(isotope)), an isotope of hydrogen
- [H I region](/source/H_I_region), a cloud in the interstellar medium
- [ATC code H01](/source/ATC_code_H01) *Pituitary and hypothalamic hormones and analogues*, a subgroup of the Anatomical Therapeutic Chemical Classification System
- [Haplogroup H1 (disambiguation)](/source/Haplogroup_H1_(disambiguation)), a grouping in genetics based on certain similarities
- [Alternative hypothesis](/source/Alternative_hypothesis) (H1)

## Technology

- , level 1 heading markup for HTML Web pages; see [HTML element](/source/HTML_element#heading)
- [DSC-H1](/source/DSC-H1), a Sony Cybershot digital camera
- H1, [John Harrison's](/source/John_Harrison#The_first_three_marine_timekeepers) first marine chronometer
- [Tianwen-1](/source/Tianwen-1) (formerly *Huoxing-1*), first Chinese space probe to reach Mars
- [H-1NF](/source/H-1NF), the Australian Plasma Fusion Research Facility, formerly H-1 Heliac stellarator
- Unitree H1, a [humanoid robot](/source/Humanoid_robot) developed by [Unitree Robotics](/source/Unitree_Robotics)

## Transportation

- [H1 Lamp](/source/H1_Lamp), an automotive halogen light bulb
- [H-I](/source/H-I) or H–1, a Japanese rocket
- [Rocketdyne H-1](/source/Rocketdyne_H-1), a liquid-propellant rocket engine

### Aviation

- [Bell Huey family](/source/Bell_Huey_family) Bell H-1, series of helicopters with that designation
- [Hooters Air](/source/Hooters_Air) airline
- [Hughes H-1 Racer](/source/Hughes_H-1_Racer), a racing aircraft

### Motor vehicles

- [Haval H1](/source/Haval_H1), a Chinese subcompact crossover
- [Hummer H1](/source/Hummer_H1), an American full-size SUV
- [Hyundai H-1](/source/Hyundai_Starex), a South Korean commercial van
- [Tiger H1](/source/Tiger_I), a German heavy tank used during WW2

### Motorcycles

- [Kawasaki H1 Mach III](/source/Kawasaki_H1_Mach_III), road motorcycle
- [Kawasaki H1R](/source/Kawasaki_H1R), racing motorcycle

### Ships

- [HMS *H1*](/source/HMS_H1), a 1915 British Royal Navy H-class submarine
- [HMS *Hotspur* (H01)](/source/HMS_Hotspur_(H01)), a 1935 British Royal Navy H-class destroyer
- [USS *H-1*](/source/USS_H-1_(SS-28)), a 1913 United States Navy submarine

### Rail

- [LB&SCR H1 class](/source/LB%26SCR_H1_class), a class of British steam locomotives
- [LNER Class H1](/source/LNER_Class_H1), a class of British steam locomotives
- Designation for [METRORail](/source/METRORail) [Siemens S70](/source/Siemens_S70) light rail vehicles

## Time

- H1 may refer to the first half of the [business year](/source/Fiscal_year), while H2 refers to the second half.

## Other uses

- [H1 (classification)](/source/H1_(classification)), a para-cycling classification
- *[*h₁](/source/*h1)*, one of the three laryngeals in the reconstructed Proto-Indo-European language
- [H1 Unlimited](/source/H1_Unlimited), a premier unlimited hydroplane racing league
- *[Hora Um da Notícia](/source/Hora_Um_da_Not%C3%ADcia)*, a news program aired by Rede Globo

## See also

- [Hello Internet](/source/Hello_Internet) (HI), a podcast
- [H-1B visa](/source/H-1B_visa)
- [HI (disambiguation)](/source/HI_(disambiguation))
- [HL (disambiguation)](/source/HL_(disambiguation))
- [1H (disambiguation)](/source/1H_(disambiguation))
- [H (disambiguation)](/source/H_(disambiguation))
- [1 (disambiguation)](/source/1_(disambiguation))

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Adapted from the Wikipedia article [H1](https://en.wikipedia.org/wiki/H1) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/H1?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.