U.S. Naval Observatory, Washington. Auxiliary apparatus, consisting of motor-generator with adjustable speed control and phase shifter, which supplies current for the synchronous motor . Bibnum Université PSL

U.S. Naval Observatory, Washington. Auxiliary apparatus, consisting of motor-generator with adjustable speed control and phase shifter, which supplies current for the synchronous motor

“U.S. Naval Observatory, Washington. Auxiliary apparatus, consisting of motor-generator with adjustable speed control and phase shifter, which supplies current for the synchronous motor”, circa 1933, Bibliothèque de l'Observatoire de Paris, inv.I.887. Consulté le 20 avr. 2024, https://bibnum.explore.psl.eu/s/psl/ark:/18469/1gp9s

Notice

Date

circa 1933

Type

Photographie

Format

Tirage photographique gélatino-bromure d’argent contrecollée sur carton

Sujet

Astronomie

Instrument scientifique

Source

Bibliothèque de l'Observatoire de Paris

inv.I.887

FR751142302-Z003771

Relation

Lien vers COSMOS

Détenteur des droits

Bibliothèque de l'Observatoire de Paris.

Numérisation Paris Sciences et Lettres

Identifiant

ark:/18469/1gp9s

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