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Universalium. 2010.
parahydrogen — paravandenilis statusas T sritis chemija apibrėžtis H₂ molekulė, kurioje dviejų H atomų magnetiniai momentai yra antilygiagretūs. atitikmenys: angl. parahydrogen rus. параводород … Chemijos terminų aiškinamasis žodynas
parahydrogen — paravandenilis statusas T sritis fizika atitikmenys: angl. parahydrogen vok. Parawasserstoff, m rus. параводород, m pranc. hydrogène para, m; parahydrogène, m … Fizikos terminų žodynas
parahydrogen — noun The form of the hydrogen molecule in which the two nuclei have antiparallel spin; about 25% of hydrogen at room temperature … Wiktionary
parahydrogen — /pærəˈhaɪdrədʒən/ (say paruh huydruhjuhn) noun a form of molecular hydrogen in which the spins of the two constituent atoms are antiparallel …
parahydrogen — /par euh huy dreuh jeuhn/, n. Physics, Chem. the form of molecular hydrogen in which the nuclei of the two hydrogen atoms contained in the molecule have spins in opposite directions. Cf. orthohydrogen. [1925 30; PARA 1 + HYDROGEN] … Useful english dictionary
Spin isomers of hydrogen — Spin Isomers of Molecular Hydrogen Molecular hydrogen occurs in two isomeric forms, one with its two proton spins aligned parallel (orthohydrogen), the other with its two proton spins aligned antiparallel (parahydrogen).[1] At room temperature… … 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
Liquid hydrogen — (LH2 or LH2) is the liquid state of the element hydrogen. It is a common liquid rocket fuel for rocket applications. Hydrogen is found naturally in the molecular H2 form.To exist as a liquid, H2 must be pressurized and cooled to a very low… … Wikipedia
Heat capacity — Thermodynamics … Wikipedia
Leiden scale — The Leiden scale was used to calibrate low temperature indirect measurements in the early twentieth century, by providing conventional values (in kelvins, then termed degrees Kelvin ) of helium vapour pressure. It was used below 183°C, the… … Wikipedia
