Results 21 to 30 of about 14,538 (248)

Le cercle méridien de Repsold de Strasbourg : analyse d’implantation au sein du nouvel observatoire de l’université impériale

Cahiers François Viète, 2023
Newly created by the German Empire in the recently annexed Alsatian capital, the Strasbourg astronomical observatory was equipped in 1880 with a Repsold meridian circle. Two characteristics define its installation.
Delphine Issenmann
doaj   +1 more source

The Crimes of Astronomical Instruments and Their Panopticon at the Royal Observatory, Greenwich during the Middle of the Nineteenth Century

Cahiers François Viète, 2023
Simon Newcomb argued that nineteenth century observatory practices were dominated by the German school of practical astronomy devised by Friedrich Wilhelm Bessel. A key tenet of this school was the mathematical correction of instrumental errors.
Daniel Belteki
doaj   +1 more source

Astronomy and Diplomacy at the Court of King João V of Portugal

Cahiers François Viète, 2017
During the reign of King João V of Portugal (r.1707-1750), astronomy took part in a movement of cultural renewal and gave impulse to notable international exchanges, which were promoted by the absolutist monarch himself.
Luís Tirapicos
doaj   +1 more source

Observatoires numériques au service du développement durable

Terminal, 2010
Cet article traite du processus de co-construction située de connaissance territoriale, dans lequel s’engagent actuellement de façon conjointe acteurs territoriaux et chercheurs.
Pierre Champollion, Jean-Marie Delvoye, Anne Piponnier   +2 more
doaj   +1 more source

Les signaux horaires français : la quête d’un système uniformisé

Cahiers François Viète, 2016
In the middle of the 19th century, six chronometric observatories of the French Navy provided a time service for the control of marine watches. A ministerial decree of 1858 required French ports to transmit a time signal at a fixed time to ships in ...
Olivier Sauzereau
doaj   +1 more source

Des systèmes de signalement du temps aux navires dans les ports français, dans les années 1880. Le cas du port de Bordeaux dans la correspondance de Georges Rayet

Cahiers François Viète, 2016
In the 19th century, knowledge of the time on board ships was essential for managing navigation. The “time-ball” system, initially installed in English ports from 1829, was gradually developed in various countries. One of the arguments for the foundation
Jérôme Noë (de La)
doaj   +1 more source

Meteorology, Timekeeping and “Scientific Occupation”: Colonial Observatories in the Third Portuguese Empire

Cahiers François Viète, 2017
This paper presents a tentative overview of colonial observatories in the Third Portuguese Empire (1825-1957). The main issue under focus is the problem of action from a distance, that is, the attempts to steer an imperial network of observation from ...
Pedro M.P. Raposo
doaj   +1 more source

Jules Janssen : un refusé à l'ombre du soleil

Cahiers François Viète, 2015
Born into a middle-class family where art plays a major role, Jules Janssen was a self-taught scientist and had to work in the bank and then as a tutor while collecting university degrees.
Stéphane Le Gars
doaj   +1 more source

Evaluation des estimations indirectes de mortalité dans trois observatoires de population au Sénégal

, 2016
En Afrique sub-saharienne, les recensements constituent une source de donnees fondamentale pour estimer la mortalite, en raison de l’incompletude de l’enregistrement des deces a l'etat civil.
B. Masquelier, C. Ndiaye, G. Pison, Ndèye Binta Dieme, I. Diouf, S. Helleringer, O. Ndiaye, V. Delaunay   +7 more
semanticscholar   +1 more source

Costa Lobo (1864-1945), the Coimbra Spectroheliograph and the Internationalisation of Portuguese Astronomy

Cahiers François Viète, 2017
At the beginning of the 20th century, Portuguese astronomy was still firmly anchored in the past. Only astronometric research was pursued and Portuguese professional as­tronomers seldom published their results.
Vitor Bonifácio
doaj   +1 more source