411 REFERENCE · Wiktionary
Dunkle Materie
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
German
de:
Etymology
From de dunkle en dark Materie en matter. de Q115462 1933, but the term had already been in use for decades, in French (fr matière obscure) by en Henri Poincaré as early as 1906,en Henri Poincaré, La Voie lactée et la théorie des gaz, Bulletin de la Société astronomique de France 20, 1906, 153–165. and in English.en Robert J. Trumpler, Dark Nebulae, Leaflet 44, July 1932, Astronomical Society of the Pacific, 179–182.
In contrast to these earlier authors, Zwicky used the term to refer to the apparent mass needed to account for galaxy clusters, where the mass of luminous matter did not add up to enough of a gravitational effect, which led him to infer the existence of nonluminous matter to account for the missing mass.
Pronunciation
de /ˌdʊŋklə maˈteːʁiə/
de De-Dunkle Materie.ogg <<Germany>> (<<Berlin>>)
Noun
Dunkle<+> Materie<f.sg>
de astrophysics cosmology dark matter
Declension
Dunkle<+> Materie<f.sg>
Descendants
en dark matter 1
References