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Deep-red spectral line of hydrogen
Hydrogen-alpha, typically shortened to H-alpha or Hα, is a deep-red visible spectral line of the hydrogen atom with a wavelength of 656.28 nm in air and
Hydrogen-alpha
Type of secondary structure of proteins
sequence of amino acids. The alpha helix has a right-handed helix conformation in which every backbone N−H group hydrogen bonds to the backbone C=O group
Alpha_helix
Atom of the element hydrogen
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral hydrogen atom contains a single positively charged proton in the
Hydrogen_atom
Spectral line of hydrogen in the Lyman series
Lyman-alpha, typically denoted by Ly-α or Lyα, is a spectral line of hydrogen (or, more generally, of any one-electron atom) in the Lyman series. A photon
Lyman-alpha
Star at the centre of the Solar System
with another using the PP chain. Fusing four free protons (hydrogen nuclei) into a single alpha particle (helium nucleus) releases around 0.7% of the fused
Sun
Important atomic emission spectra
line is called "Lyman-alpha" (Ly-α), while the 7 → 3 line is called "Paschen-delta" (Pa-δ). There are emission lines from hydrogen that fall outside of
Hydrogen_spectral_series
Prefix in organic chemistry nomenclature
relative location of carbon atoms as well as hydrogen atoms to other functional groups. The α-carbon (alpha-carbon) refers to the first carbon atom that
Locant
Class of chemical compounds
are stronger acids compared to their non-alpha hydroxy counterparts, a property enhanced by internal hydrogen bonding. AHAs serve a dual purpose: industrially
Alpha_hydroxycarboxylic_acid
Oxidation of alcohol
((CH3)3CO)2CrO2), which is itself a good oxidant. For those structures with hydrogen alpha to the oxygen, the chromate esters degrade, releasing the carbonyl product
Jones_oxidation
Spectral line of hydrogen state transition in UHF radio frequencies
The hydrogen line, 21 centimeter line, or H I line is a spectral line that is created by a change in the energy state of solitary, electrically neutral
Hydrogen_line
China's first solar observatory
22 June 2022. Davenport, Justin (14 October 2021). "China launches hydrogen-alpha solar telescope aboard Long March 2D". NASASpaceFlight. Retrieved 22
Chinese H-alpha Solar Explorer
Chinese_H-alpha_Solar_Explorer
Ionizing radiation particle of two protons and two neutrons
Alpha particles, also called alpha rays or alpha radiation, consist of two protons and two neutrons bound together into a particle identical to the nucleus
Alpha_particle
Topics referred to by the same term
reflecting other colors Hydrogen-alpha filter, an optical filter that transmits a narrow bandwidth of light centred on the H-alpha wavelength Photographic
Filter
Atoms with a single valence electron, so they behave like hydrogen
A hydrogen-like atom (or hydrogenic atom) is any atom or ion with a single electron. Examples of hydrogen-like atoms are H, He+, Li2+, Be3+ and so on
Hydrogen-like_atom
Chemical element with atomic number 1 (H)
hydrogen is a gas of diatomic molecules with the formula H2, called dihydrogen, or sometimes hydrogen gas, molecular hydrogen, or simply hydrogen. Dihydrogen
Hydrogen
Instrument to measure the properties of visible light
These lines are named for the elements which cause them, such as the hydrogen alpha, beta, and gamma lines. A glowing object will show bright spectral lines
Optical_spectrometer
Telescope in northern Chile
H-Alpha Mapper (WHAM) is a custom-built 0.6 metres (24 in) telescope operated by the University of Wisconsin–Madison, used to study the Hydrogen-alpha ions
Wisconsin_H-Alpha_Mapper
Intermolecular attraction between a hydrogen donor-and-acceptor pair
In chemistry, a hydrogen bond (H-bond) is a specific type of molecular interaction that exhibits partial covalent character and cannot be described as
Hydrogen_bond
Astronomical spectroscopic term
column density of neutral hydrogen will show typical damping wings around the line and is referred to as a damped Lyman-alpha system. For quasars at higher
Lyman-alpha_forest
2010 APS-C digital single-lens reflex camera
heightened hydrogen-alpha (H-alpha) sensitivity for improved capture of red hydrogen emission nebulae. The 60Da is three times as sensitive to H-alpha light
Canon_EOS_60D
Emission nebula in the constellation Orion
hydrogen. It has a diameter of about 4.5′, at its distance meaning it measures 2.1 ly (0.65 pc). The net (meaning omitting the star) hydrogen alpha luminosity
Messier_43
Imaging of astronomical objects
filter and a low-noise sensor with heightened hydrogen-alpha sensitivity for improved capture of red hydrogen emission nebulae. There are also cameras specifically
Astrophotography
Emission nebula in the constellation Dorado
at a blue-green wavelength of 500.7 nm, and neutral hydrogen atoms, which emit the hydrogen-alpha line at a red wavelength of 656.2 nm. Amateur astronomer
N44_(emission_nebula)
Star system in the Centaurus constellation
Alpha Centauri (α Centauri, α Cen, or Alpha Cen) is a star system in the southern constellation of Centaurus. It consists of three stars: Rigil Kentaurus
Alpha_Centauri
Constellation in the southern sky
southern portion is red from hydrogen alpha emissions, and the center region is colored yellow from both oxygen and hydrogen emissions. The western white
Dorado
Emission nebula in the constellation Cygnus
Sign Nebula." NGC 6888 in Hydrogen and Oxygen Light. HOO Palette. Imaged by Don Christopher Deaver Crescent Nebula in H-alpha and OIII. Imaged with a 715mm
Crescent_Nebula
Solar observatory on Skylab
spectroheliometer) S-055 (Ultraviolet spectrograph) Hydrogen alpha and coronograph: H-alpha no. 1 H-alpha no. 2 S-052 (a Coronagraph) Also, experiment S149
Apollo_Telescope_Mount
involves single electron oxidation of both the alcoholic oxygen and the hydrogen alpha to the alcohol by two atoms of silver(I) within the celite surface.
Fétizon_oxidation
American astronomer (born 1964)
Buren with engineer Wayne Rosing mapped the entire southern sky in the hydrogen alpha transition with sufficient sensitivity for decontamination of the Milky
Peter_R._McCullough
Open cluster in the constellation Sagittarius
be pre-main-sequence stars, with 26 candidates identified based upon hydrogen alpha emission and the presence of lithium in the spectrum. The stars in the
Messier_21
Photography in one color
for specific wavelengths of light emitted by many deep space objects. Hydrogen-alpha, a common wavelength used, is red in color. and only the red pixels
Monochrome_photography
Vehicle that uses hydrogen fuel for motive power
A hydrogen vehicle is a vehicle that uses hydrogen to move. Hydrogen vehicles include some road vehicles, rail vehicles, space rockets, forklifts, ships
Hydrogen_vehicle
Emission nebula in the constellation Orion
Head Nebula in Narrowband Sulfur-Hydrogen Alpha- Oxygen with a 1000mm telescope Monkey Head Nebula in hydrogen alpha focal length 384mm Monkey Head Nebula
NGC_2174
Emission nebula
Scorpius. It is ionized by the star HD 161853. It is most visible using a Hydrogen-alpha filter. "Sharpless (Sh2) - Astrobasics". 13 September 2022. "Sh 2-15"
Sh_2-15
Nuclear fusion reaction
The triple-alpha process is a set of nuclear fusion reactions by which three helium-4 nuclei (alpha particles) are transformed into carbon. Helium accumulates
Triple-alpha_process
Eclipsing binary brown dwarf in the Orion Nebula
convection, supported by the primary's observed fast rotation and strong hydrogen-alpha emission; large starspots on the primary, though this was found to be
2MASS_J05352184−0546085
Exotic particle made of an antiproton and positron
Antihydrogen (H) is the antimatter counterpart of hydrogen. Whereas the common hydrogen atom is composed of an electron and proton, the antihydrogen atom
Antihydrogen
Star-forming region in the constellation Orion
Barnard's Loop in Hydrogen-alpha images that warp around the eastern portion of Orion. The other part of the superbubble that is seen in H-alpha is the Eridanus
Orion_molecular_cloud_complex
Supernova remnant in the Milky Way
his team using a Schmidt camera and a narrowband filter close to the Hydrogen Alpha transmission line. It is difficult to observe due to its extremely low
Simeis_147
Binary star system in the Phoenix constellation
at Gemini South, which showed a spectral type of M5.5/M6 and strong Hydrogen-alpha emission. The astrometry showed that this star belongs to the Tucana-Horologium
Delorme_1
Temporary spots on the Sun's surface
indirectly, and even traced, to follow sunspot evolution. Special purpose hydrogen-alpha narrow bandpass filters and aluminum-coated glass attenuation filters
Sunspot
Canadian amateur astronomer (1942–2025)
processing and astrometry. In another innovation, Newton captured images of hydrogen-alpha bursts of plasma ejections from the Sun's surface using a specialized
Jack_B._Newton
Bright region in the Sun's chromosphere
In this near true color photograph, taken through a narrowband hydrogen-alpha filter, plages are visible as overexposed patches.
Solar_plage
Astrophotography technique
object rich in hydrogen, the object will primarily emit light in the hydrogen-alpha/red wavelengths. In this scenario, the Bayer matrix will only allow
Monochrome astrophotography techniques
Monochrome_astrophotography_techniques
Molecular cloud
nebula. It is similar to the nearby Sh 2-24 being that it contains no hydrogen-alpha. "Sh 2-23". Russeil, D. (2003). "Star-forming complexes and the spiral
Sh_2-23
Cosmological process in the early universe
neutral hydrogen and can be produced copiously by galaxies with young stars. Moreover, Lyman alpha photons interact strongly with neutral hydrogen in intergalactic
Reionization
Radio galaxy in the constellation Ursa Major
total size of 48.24 kiloparsecs. There are also detections of both hydrogen-alpha and doubly ionized oxygen emission lines with estimated line luminosities
6C_B084407.8+582055
during a total eclipse, when it gives off a red glow due to Balmer Hydrogen-alpha emission. Rising solar spicules occur in this region of magnetic activity
Glossary_of_astronomy
Galaxy in the constellation Lynx
x 15.7 and 22.8 and 16.9 kiloparsecs when imaged in both K-band and hydrogen-alpha imaging. A tidal tail with a blue appearance is seen connecting to the
II_Hz_4
Observatory
Swasey 0.3-meter (12-inch) refractor Solar telescope heliostat, spectrograph, digital hydrogen-alpha imaging Related media on Commons [edit on Wikidata]
Kirkwood_Observatory
Planetary nebula in the constellation Orion
color and is very faint. Abell 13 has a circular outer ring of Ha (Hydrogen-alpha). The nebula was discovered in 1955 by an American astronomer named
Abell_13
Hydrogen spectral series
spectral lines of hydrogen found outside the visible spectrum. The red H-alpha spectral line of the Balmer series of atomic hydrogen, which is the transition
Balmer_series
Chemical element with atomic number 60 (Nd)
fluorescent lighting while passing other colours, especially dark red hydrogen-alpha emission from nebulae. Neodymium is also used to remove the green color
Neodymium
Molecular cloud
Sh 2-35 is a nebula in Sagittarius. It is best viewed with a Hydrogen-alpha filter. It is located near to Sh 2-37. combined with Sh 2-37, it has a mass
Sh_2-35
Museum in Washington, D.C.
It has a 16-inch Boller & Chivens telescope, a Sun Gun Telescope and hydrogen-alpha (red light, to see the chromosphere) and calcium-K (purple light) telescopes
National_Air_and_Space_Museum
Emission nebula
appears mostly red in visible light, making observation best through a Hydrogen-alpha filter. "Sh 2-16". "Sharpless (Sh2) - Astrobasics". 13 September 2022
Sh_2-16
HII Region in Scorpius
Amateur astronomers can usually see it with a wide field telescope and a hydrogen-alpha filter. The nebulous area is fairly large with an irregular shape appearing
Sh_2-2
X-ray binary in Cygnus containing a stellar black hole
an underabundance of carbon in its atmosphere. The ultraviolet and hydrogen-alpha spectral lines of HDE 226868 show profiles similar to the star P Cygni
Cygnus_X-1
Structure in the Milky Way Galaxy
Orion-Eridanus Superbubble with ROSAT. The Orion-Eridanus superbubble in Hydrogen-alpha, with the Barnard's Loop and Eridanus Loop. Image covers the same area
Orion–Eridanus_Superbubble
Magnetic confinement device used to produce thermonuclear fusion power
fusion in a deuterium plasma. Both reactors developed understanding of alpha particles' role in heating fusion plasma. JET also researched the high-confinement
Tokamak
State park in Washington (state), United States
telescopes on-site, including portable Dobsonians, a permanently mounted Hydrogen-Alpha solar telescope, and the primary instrument; a 24.5-inch reflector which
Goldendale Observatory State Park
Goldendale_Observatory_State_Park
Brightest cluster galaxy in the constellation Hydra
of 319 ± 16 kilometers per seconds. There are no detections of any hydrogen-alpha emission. "NED Search results for ZwCl 6193 BCG (OGC 169)". NASA/IPAC
ZwCl_1693_BCG
Protein structure classification tool
carbonyl oxygen and amide hydrogen respectively, their opposites assigned to the carbonyl carbon and amide nitrogen. A hydrogen bond is identified if E
DSSP_(algorithm)
Interstellar absorption and scattering of light
temperature and density in the nebula. For example, the ratio of hydrogen-alpha to hydrogen-beta emission is always around 2.85 under a wide range of conditions
Extinction_(astronomy)
New Zealand physicist and chemist (1871–1937)
bombarded with alpha particles. These experiments led him to discover the emission of a subatomic particle that he initially called the "hydrogen atom", but
Ernest_Rutherford
Telescope used to observe the Sun
which redirect 95% of the light and heat away from the eyepiece, up to hydrogen-alpha filter systems and even home built spectrohelioscopes. In contrast to
Solar_telescope
Creation of chemical elements within stars
nucleosynthesis: Hydrogen fusion: Deuterium fusion The proton–proton chain The carbon–nitrogen–oxygen cycle Helium fusion: The triple-alpha process The alpha process
Stellar_nucleosynthesis
Radio galaxy in the constellation Canes Venatici
index is 0.98α. The optical spectrum of the galaxy has presence of both hydrogen-alpha and doubly ionized oxygen emission lines with estimated line luminosities
6C_B140400.6+405554
Chemical reaction that swaps a hydrogen radical between two molecules
hydrogen atom abstraction, or hydrogen atom transfer (HAT), refers to a class of chemical reactions where a hydrogen free radical (a neutral hydrogen
Hydrogen_atom_abstraction
Type of distant galaxy
A Lyman-alpha emitter (LAE) is a type of distant galaxy that emits Lyman-alpha radiation from neutral hydrogen. Most known LAEs are extremely distant,
Lyman-alpha_emitter
Supernova remnant
system. The Antlia SNR was first identified in 2002 from its X-ray and hydrogen-alpha emissions. At that time, it was tentatively linked with the pulsar PSR
Antlia_supernova_remnant
Brightest cluster galaxy of ZwCl 8193 in the constellation Hercules
galaxy, based on the presence of clumpy bright far-ultraviolet and hydrogen alpha emission that is arranged in a spiral formation. A nuclear bulge is
ZwCl_8193_BCG
Set of ultraviolet wavelengths emitted by hydrogen
(greater than 1) to the first energy level. Bohr model H-alpha Hydrogen spectral series K-alpha Lyman-alpha line Lyman continuum photon Moseley's law Rydberg
Lyman_series
Nearest star to the Solar System
is a member of the Alpha Centauri star system, being identified as component Alpha Centauri C, and is 2.18° southwest of the Alpha Centauri AB pair. It
Proxima_Centauri
Radio galaxy in the constellation Canes Venatici
linear size of the source is 245.67 kiloparsecs. The galaxy has both hydrogen-alpha and doubly ionized oxygen emission lines in its optical spectrum. The
6C_B134444.5+420701
Galaxy in the constellation Ursa Major
astronomer W4SM with 17" PlaneWave CDK astrograph M82 cigar galaxy with its hydrogen emissions taken in France by amateur astrophotographer Anthony MICHEL List
Messier_82
Brightest star in the constellation Orion
estimated age of seven to nine million years, Rigel has exhausted its core hydrogen fuel, expanded, and cooled to become a supergiant. It is expected to end
Rigel
Quasar and Lyman-alpha blob in the constellations of Canes Venatici and Coma Berenices
Lyman-alpha line, an ultraviolet wavelength emitted by neutral hydrogen. Such objects, however, have been very difficult to study due to the Lyman-alpha line
TON_618
Galaxy in the constellation Eridanus
of the star formation rates in NGC 1232 took images of the galaxy in Hydrogen Alpha, finding over 970 HII regions. It is remarked that there is a concentration
NGC_1232
Bipolar planetary nebula in the constellation Scorpius
Release SIMBAD Query Result NGC 6302 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images Butterfly Nebula at
NGC_6302
Radio galaxy in the constellation Boötes
Fanaroff-Riley Class Type I radio galaxy. The estimated luminosities of both the hydrogen-alpha and doubly ionized oxygen emission lines are found to be 0.000 and 7
RGZ_J145039.8+441829
Spectroscopic binary star in the constellation Andromeda
each direction (angular size 20′). These faint jets were discovered in hydrogen-alpha emission in 2024 by astronomer Stefan Ziegenbalg. Subsequent studies
KX_Andromedae
Seyfert type 1 galaxy located in the constellation Andromeda
was first discovered by astronomers in 1996 who found it containing hydrogen-alpha emission in its spectrum. IERS B0125+487 contains a flat radio spectrum
IERS_B0125+487
Star system in the constellation Libra
direct imaging candidate by Calissendorff et al. with a D. 2M1510AB has hydrogen-alpha emission lines, which is interpreted as a sign of youth. The system
2M1510
Unit of length about the size of a hydrogen atom
{e} }=\alpha ^{2}a_{0}=\alpha ^{3}(\hbar c/E_{\text{h}}).} The Bohr radius including the effect of reduced mass in the hydrogen atom is given by a 0 ∗
Bohr_radius
Physical constants of energy and wavenumber
hydrogen atom, or, alternatively, the wavenumber of the lowest-energy photon capable of ionizing a hydrogen atom from its ground state. The hydrogen spectral
Rydberg_constant
Observatory
current images of the sun, especially in the hydrogen-alpha line that is the strongest visible-light line of hydrogen and that reveals the solar chromosphere
Kanzelhoehe_Solar_Observatory
Type-cD galaxy in the constellation Cetus
galaxy is estimated to be 3.0 × 109 M☉. Evidence found the galaxy has hydrogen-alpha emission described as extended. The stellar population of the galaxy
ESO_541-13
Emission nebula
exposure. The nebula mostly emits red light, making viewing through a hydrogen-alpha filter effective. Havlen-Moffat 1 is known to be a source of ionization
Sh_2-4
bombarded nitrogen gas with alpha particles and observed hydrogen ions being emitted from the gas. Rutherford concluded that the alpha particles struck the nuclei
History_of_atomic_theory
Type-cD galaxy in the constellation Boötes
signatures of emission lines mainly made up of ionized oxygen, hydrogen beta and hydrogen alpha. There is also a presence of an X-ray source with the total
NVSS_J141343+433945
Atomic model introduced by Niels Bohr in 1913
By 1913 Bohr had already shown, from the analysis of alpha particle energy loss, that hydrogen had only a single electron not a matched pair. Bohr's
Bohr_model
Dark Nebula in the Constellation Orion
photographically and requires dark skies, long exposures, and often narrowband hydrogen-alpha imaging to reveal it against faint background emission. It is frequently
LDN_1622
Dimensionless number that quantifies the strength of the electromagnetic interaction
of the atom. α {\displaystyle \alpha } quantified the gap in the fine structure of the spectral lines of the hydrogen atom, which had been measured precisely
Fine-structure_constant
recording and transmitting television images of the solar disk in the Hydrogen-alpha spectrum. NASA Astronauts, which would soon be traversing the space
Razdow_Telescope
Eclipsing binary star system in the constellation Sagittarius
system consists of ordinary main sequence stars of classes B5V and A2V. Hydrogen alpha emission lines suggested that the stars are interacting. RS Sagittarii
RS_Sagittarii
Binary star system in the constellation Draco
Mohler in 1940, and in 1965 M. Lacoarret studied variations in the hydrogen alpha emission profiles from the target. This system was discovered to be
CX_Draconis
American astronomer
Romanian-born astronomer Nicholas Sanduleak to publish a catalogue of Hydrogen alpha emission-line stars. (Sanduleak was a former student of Stephenson at
Charles_Bruce_Stephenson
Young sun-like star in the constellation Centaurus
(luminosity class V). The letter "e" indicates V1400 Centauri exhibits weak hydrogen-alpha emission lines in its visible light spectrum. Lastly, "Li" indicates
V1400_Centauri
T-Tauri star
disk. Observations with the VLT X-SHOOTER showed hydrogen emission lines, especially Hydrogen-alpha. This indicated that SR 12c accretes material at a
SR_12_(star)
HYDROGEN ALPHA
HYDROGEN ALPHA
Male
Greek
(Μαθθαῖος) Contracted form of Greek Mattathias, MATHTHAIOS means "gift of God." In the bible, this is the name of a son of Alphaios, one of the twelve disciples.
Girl/Female
Tamil
A short letter, Alphabet
Male
Greek
(Λευίς) Greek name LEUIS means "joined." In the bible, this is the name of the son of Halphaios (Latin Alphaeus), a collector of customs.
Girl/Female
Hindu
A short letter, Alphabet
Male
African
(ox); the first letter of the Greek alphabet.
Girl/Female
Greek American
Firstbom.' The first letter of the Greek alphabet.
Girl/Female
Arabic, Muslim
Bengali Alphabet
Girl/Female
Biblical
The last letter of the Greek alphabet, long O.
Girl/Female
Indian
Alphabet; Letter
Boy/Male
Muslim
The name Humza is one of the Arabic alphabets
Boy/Male
Hindu
First letter of the greek alphabet
Boy/Male
Arabic
Arabic Alphabet
Boy/Male
Indian
The name Humza is one of the Arabic alphabets
Boy/Male
Christian, Indian, Telugu
Hebrew Alphabet
Male
Greek
(Ἀλφαῖος) Variant spelling of Greek Halphaios, ALPHAIOS means "changing."Â
Male
Greek
(Ματθαίος) Contracted form of Greek Maththaios, MATTHAIOS means "gift of God." In the bible, this is the name of a son of Alphaios, one of the twelve disciples.
Girl/Female
Assamese, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Telugu
Litters; Alphabets; Short Letter
Boy/Male
Tamil
First letter of the greek alphabet
Boy/Male
African, Australian, Chinese, French, Latin, Swedish
First Letter of the Greek Alphabet; Leader
Girl/Female
Greek American
Born fourth. Fourth letter of the Greek alphabet.
HYDROGEN ALPHA
HYDROGEN ALPHA
Surname or Lastname
English
English : variant spelling of Worthen.
Male
Egyptian
, a title belonging to Thoth.
Boy/Male
Hindu, Indian, Punjabi, Sikh, Traditional
Lamp of God's Grace
Boy/Male
Tamil
Dridhakshathra | தà¯à®°à¯€à®¤à®¾à®•à¯à®·à®¾à®¤à¯à®°
One of the kauravas
Boy/Male
Tamil
Sugavanan | ஸà¯à®•à®µà®¾à®¨à®¨Â
Girl/Female
Hindu
Fair
Girl/Female
Indian
The Hindu holy book
Girl/Female
Tamil
Tender, Beautiful, Delicate
Girl/Female
Arabic, Australian, Muslim, Pakistani
Pure
Girl/Female
Indian
Light of God
HYDROGEN ALPHA
HYDROGEN ALPHA
HYDROGEN ALPHA
HYDROGEN ALPHA
HYDROGEN ALPHA
v. t.
To combine with hydrogen; to treat with, or subject to the action of, hydrogen; to reduce; -- contrasted with oxidize.
n.
Electricity.
a.
Formed by hydrogen and tellurium; as, hydrotelluric acid, or hydrogen telluride.
a.
Of or pertaining to hydrogen; containing hydrogen.
a.
Pertaining to, or containing, hydrogen; as, hydric oxide.
n.
A binary compound of hydrogen; a hydride.
a.
Having five hydrogen atoms capable of substitution.
n.
A poison separable from decomposed meat infusions, and supposed to be formed from albuminous matter through the agency of bacteria.
n.
A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air (hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those of animal or vegetable origin. It may by produced in many ways, but is chiefly obtained by the action of acids (as sulphuric) on metals, as zinc, iron, etc. It is very inflammable, and is an ingredient of coal gas and water gas. It is standard of chemical equivalents or combining weights, and also of valence, being the typical monad. Symbol H. Atomic weight 1.
n.
Carbureted hydrogen; also, a hydrocarbon.
n.
The act or process of freeing from hydrogen; also, the condition resulting from the removal of hydrogen.
n.
Antimony hydride, or hydrogen antimonide, a colorless gas produced by the action of nascent hydrogen on antimony. It has a characteristic odor and burns with a characteristic greenish flame. Formerly called also antimoniureted hydrogen.
n.
A compound of arsenic and hydrogen, AsH3, a colorless and exceedingly poisonous gas, having an odor like garlic; arseniureted hydrogen.
a.
Composed of hydrogen and bromine; as, hydrobromic acid.
a.
Combined with hydrogen sulphide.
a.
Combined with or containing antimony; as, antimoniureted hydrogen.
n.
A liquor consisting of honey diluted in water, and after fermentation called mead.
n.
Impregnating with sulphureted hydrogen gas.
v. t.
To deprive of, or free from, hydrogen.