light hydrogen
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Hydrogen atom — Stable Isotope isotope name = Hydrogen 1 isotope filename = hydrogen 1.png alternate names = protium mass number = 1 symbol = H num neutrons = 0 num protons = 1 abundance = 99.985% mass = 1.007825 spin = ½+ excess energy = 7288.969 error1 = 0.001 … Wikipedia
hydrogen bomb — noun a nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form helium • Syn: ↑H bomb, ↑fusion bomb, ↑thermonuclear bomb • Hypernyms: ↑nuclear weapon, ↑atomic weapon, ↑bomb … Useful english dictionary
hydrogen — 1. A gaseous element, atomic no. 1, atomic wt. 1.00794. 2. The molecular form (H2) of the element. SYN: dihydrogen. [hydro + G. gen, producing] activated h. h. removed by a dehydrogenase, e.g., via a … Medical dictionary
Hydrogen peroxide — IUPAC name … Wikipedia
Light-dependent reactions — of photosynthesis at the thylakoid membrane See also: Light independent reactions The light dependent reactions , or light reactions, are the first stage of photosynthesis, the process by which plants capture and store energy from sunlight. In… … Wikipedia
Hydrogen production — Hydrogen is commonly produced by extraction from hydrocarbon fossil fuels via a chemical path. Hydrogen may also be extracted from water via biological production in an algae bioreactor, or using electricity (by electrolysis), chemicals (by… … Wikipedia
Hydrogen storage — describes the methodologies for storing H2 for subsequent use. The methodologies span many approaches, including high pressures and cryogenics, but usually focus on chemical compounds that reversibly release H2 upon heating. Hydrogen storage is a … Wikipedia
Hydrogen leak testing — is the normal way in which a hydrogen pressure vessel or installation is checked for leaks or flaws. There are various tests.*The Hydrostatic test, The vessel is filled with a nearly incompressible liquid usually water or oil and examined for… … Wikipedia
Hydrogen darkening — is a physical degradation of the optical properties of glass. Free hydrogen atoms are able to bind to the SiO2 silica glass compound forming hydroxyl (OH) a chemical compound that interferes with the passage of light through the glass.The problem … Wikipedia
Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium … Wikipedia
