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See detailJ.-C. Houzeau
Folie, François ULg

in Annuaire de l'Observatoire Royal de Belgique (1890)

François Folie, Jean-Charles Houzeau’s successor in the Royal Observatory of Belgium, drafts a biographical note about him.

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See detailR. Clausius, sa vie, ses travaux et leur portée métaphysique
Folie, François ULg

in Revue des Questions Scientifiques (1890), 27

François Folie drafts Rudolf Clausius's biography as well as an analysis and comments on his various works.

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See detailSur les deux nutations à période diurne
Folie, François ULg

in Bulletin Astronomique (1890), 7

The author draws the main features of the initial nutation and the diurnal nutation in answer to a Mr. Radau’s note

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See detailPoële à gaz Simoun: Système de lairesse
Spring, Walthère ULg

in Le Mouvement Hygiénique (1890), VI(1), 10-12

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See detailDétermination provisoire des constantes de la nutation diurne et de la nutation initiale
Folie, François ULg

in Annuaire de l'Observatoire Royal de Belgique (1890), 57

The author shows the necessary to consider the diurnal nutation in the writing of their astronomical observations.

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See detailL’anémie expérimentale comme procédé de dissociation des propriétés motrices et sensitives de la moelle épinière
Fredericq, Léon ULg

in Bulletin de l'Académie Royale de Médecine de Belgique (1889), XVIII

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See detailUn système chimique nouveau
Hunt, Thomas Sterry; Spring, Walthère ULg

Book published by Nierstrasz - Deuxième édition américaine (1889)

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See detailDe l'état actuel des études de l'antiquité gréco-romaine
Roersch, Louis ULg

Speech (1889)

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See detailUeber die Bestimmung der täglischen Nutation
Folie, François ULg

in Astronomische Nachrichten (1889), 121(2887), 129-134

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See detailObservation de l'éclipse partielle de Lune du 16 janvier 1889
Folie, François ULg

in Astronomische Nachrichten (1889), 121(2889), 135-18

The author publishes the remarks and the observations of the moon partial eclipse of January 16th, 1889 made at the Belgium Royal Observatory by E. Stuyvaert.

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See detailNouveaux résultats relatifs à la détermination des constantes de la nutation diurne
Folie, François ULg; Niesten, Louis

in Bulletins de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique (1889), 3e série, t. 17(2), 75-79

The authors publish the results of observations relating to the diurnal nutation constants determination.

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See detailPreuves de la nutation diurne: mode d'observation propre à la mettre en évidence en une seule soirée
Folie, François ULg

in Monthly Notices of the Royal Astronomical Society (1889), 49(5), 259-267

The author explains a process which allows to demonstrate, in a single night, the existence of the diurnal nutation. He also reports the results of different determinations.

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See detailSur la détermination de la nutation diurne
Folie, François ULg

in Bulletin Astronomique (1889), 6

The author explains his constant determination of the diurnal nutation which consists in the observation of pole’s nearby stars at six hours apart with use of a powerful meridian circle.

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See detailÜber eine Zunahme chemischer Energie an der freien Oberfläche flüssiger Körper : Vorläufige Mitteilung
Spring, Walthère ULg

in Zeitschrift für Physikalische Chemie (1889), 3

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See detailPreuves de la nutation diurne: détermination approximative de ses constantes
Folie, François ULg

in Annuaire de l'Observatoire Royal de Belgique (1889), 56

After having shown the existence of the diurnal nutation and the need to consider it in the observations, the author applies to find the most appropriate methods of observation to show and to determine ... [more ▼]

After having shown the existence of the diurnal nutation and the need to consider it in the observations, the author applies to find the most appropriate methods of observation to show and to determine the earth's crust motion. [less ▲]

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See detailPreuve inattendue de la nutation diurne et de la nécessité d'en tenir compte dans la réduction des observations
Folie, François ULg

in Bulletins de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique (1889), 3e série, t. 18(11), 521-530

The proof of the diurnal nutation is confirmed by a new determination: the azimuth variations of the meridian circle of Strasbourg.

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See detailMnémotechnique des analogies de Neper
Folie, François ULg

in Annuaire de l'Observatoire Royal de Belgique (1889), 56

The author indicates a mnemonic process for writing the Napier’s formulae.

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