• In spectroscopy, a forbidden mechanism (forbidden transition or forbidden line) is a spectral line associated with absorption or emission of photons by...
    14 KB (1,843 words) - 21:14, 7 May 2025
  • Look up forbid or forbidden in Wiktionary, the free dictionary. Forbidden may refer to: Forbidden mechanism, a spectral line associated with absorption...
    2 KB (232 words) - 14:38, 8 March 2025
  • Thumbnail for Spectroscopy
    such a case, it is the tissue that acts as a diffraction or dispersion mechanism. Spectroscopic studies were central to the development of quantum mechanics...
    44 KB (4,768 words) - 18:59, 23 May 2025
  • Thumbnail for Potassium cyanide
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    14 KB (1,278 words) - 01:12, 26 May 2025
  • Thumbnail for Acetone
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    48 KB (4,795 words) - 17:30, 16 May 2025
  • Thumbnail for Sodium hydroxide
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    55 KB (6,097 words) - 02:33, 28 May 2025
  • Thumbnail for Methanol
    methanol according to the equation CO2 + 3 H2 → CH3OH + H2O In terms of mechanism, the process occurs via initial conversion of CO into CO2, which is then...
    56 KB (5,412 words) - 18:35, 22 May 2025
  • Thumbnail for Sodium chloride
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    36 KB (3,739 words) - 02:59, 26 May 2025
  • Thumbnail for Methylamine
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    15 KB (1,122 words) - 23:31, 28 May 2025
  • Thumbnail for Molecule
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    33 KB (3,704 words) - 13:13, 27 January 2025
  • Thumbnail for Hydrogen cyanide
    Desmoxytes purpurosea, and Apheloria release hydrogen cyanide as a defense mechanism, as do certain insects, such as burnet moths and the larvae of Paropsisterna...
    49 KB (4,821 words) - 00:01, 26 May 2025
  • Thumbnail for Methoxy group
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    4 KB (410 words) - 10:10, 27 March 2025
  • Thumbnail for Formaldehyde
    been extensively studied, yielding new extragalactic sources. A proposed mechanism for the formation is the hydrogenation of CO ice: H + CO → HCO HCO + H...
    90 KB (8,447 words) - 15:23, 27 May 2025
  • Thumbnail for Ethylene
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    36 KB (3,225 words) - 18:04, 7 March 2025
  • Thumbnail for Organic compound
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    21 KB (2,272 words) - 20:39, 28 March 2025
  • Thumbnail for Argon
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    40 KB (4,715 words) - 10:17, 29 May 2025
  • Thumbnail for Ethylene glycol
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    31 KB (3,192 words) - 05:00, 15 May 2025
  • Thumbnail for Hydrogen fluoride
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    16 KB (1,389 words) - 23:14, 29 April 2025
  • known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    24 KB (3,209 words) - 09:05, 29 April 2025
  • Thumbnail for Life
    endosymbiosis between bacteria and the progenitor eukaryotic cell. The molecular mechanisms of cell biology are based on proteins. Most of these are synthesised by...
    112 KB (11,084 words) - 00:16, 23 May 2025
  • Thumbnail for Methanethiol
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    14 KB (1,301 words) - 16:12, 15 May 2025
  • metastable impurity states, slowed by reliance on the low-probability forbidden mechanism, again results in light emission (slow component). The activator...
    5 KB (674 words) - 21:45, 4 February 2024
  • Thumbnail for Iron(II) oxide
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    7 KB (549 words) - 18:05, 6 March 2025
  • Thumbnail for Methyl formate
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    6 KB (452 words) - 16:09, 11 March 2025
  • Thumbnail for Methyl acetate
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    6 KB (495 words) - 17:44, 3 March 2025
  • Thumbnail for Abiogenesis
    amino acids for protein metabolism, and nucleic acid DNA and RNA for the mechanisms of heredity. Any successful theory of abiogenesis must explain the origins...
    202 KB (20,664 words) - 00:26, 28 May 2025
  • Thumbnail for Formic acid
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    40 KB (4,123 words) - 16:36, 24 May 2025
  • Thumbnail for Acetic acid
    1039/JR9490002877. Duan X, Page M (1995). "Theoretical Investigation of Competing Mechanisms in the Thermal Unimolecular Decomposition of Acetic Acid and the Hydration...
    63 KB (6,639 words) - 21:34, 24 May 2025
  • Thumbnail for Woodward–Hoffmann rules
    Perspectives on Structure and Mechanism in Organic Chemistry, Brooks/Cole, pp. 710–794, ISBN 0534249485. More precisely, a 'symmetry-forbidden' system with true symmetry...
    93 KB (11,920 words) - 14:03, 12 December 2024
  • Thumbnail for Ethanol
    known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Homochirality Intergalactic dust Interplanetary medium Interstellar...
    109 KB (10,856 words) - 14:41, 27 May 2025