References of "1893"
     in
Bookmark and Share    
Full Text
See detailRecherche correcte de la constante de l'aberration par des observations dans le premier vertical
Folie, François ULg

in Bulletins de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique (1893), 3e série, t. 26(8), 194-199

The author is surprised by the strong value found for the aberration constant, by the observations in the vertical first, and by the conflict between the results provided to a same astronomer, by his ... [more ▼]

The author is surprised by the strong value found for the aberration constant, by the observations in the vertical first, and by the conflict between the results provided to a same astronomer, by his observations on two different stars. So, he looks for the reason of these anomalies. He takes into account the nutation and the systematic aberration. [less ▲]

Detailed reference viewed: 12 (0 ULg)
See detailObservation au sujet d'une note critique de M. Hinrichs sur l'exactitude du nombre proportionnel déterminé par Stas entre le KCL et l'oxygène
Spring, Walthère ULg

in Bulletin de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique. Sciences. 3e série (1893), XXV(2), 83-92

Detailed reference viewed: 3 (0 ULg)
Full Text
See detailÜber das Vorkommen gewisser für den Flüssigkeits- oder Gaszustand charakteristichen Eigenschaften bei festen Metallen
Spring, Walthère ULg

in Zeitschrift für Physikalische Chemie (1893), XV

Spring, W. Zeitschrift fuer Physikalische Chemie, Stoechiometrie und Verwandtschaftslehre (1894), 15, 65-78; SciFinder (Chemical Abstracts Service: Columbus, OH); https://scifinder.cas.org (accessed July ... [more ▼]

Spring, W. Zeitschrift fuer Physikalische Chemie, Stoechiometrie und Verwandtschaftslehre (1894), 15, 65-78; SciFinder (Chemical Abstracts Service: Columbus, OH); https://scifinder.cas.org (accessed July 8, 2010). Many metals, when heated to temperatures considerably below their melting points, exhibit properties characteristic of the liquid state. For examination in this respect, the metals were turned into cylinders with ends as perfectly plane as possible, and placed end to end in an iron holder, pressure being applied by a screw. They were heated in this condition in a hot air bath, filled, if necessary, with an indifferent gas. Cylinders of aluminium, bismuth, cadmium, copper, tin, gold, lead, zinc, antimony, and platinum were employed, and in the first experiment two cylinders of the same metal were used. The temperature was kept for from 4 to 8 hours at from 200° to 400°, and it was found that, except in the case of antimony and platinum, the cylinders had alloyed so perfectly that they could be turned with one end fixed in a lathe, whilst if broken in a vice the fracture did not take place along the original surface of separation. Pairs of different metals were next employed, usually copper or lead with some of the other metals, with the result that, at the junction, an alloy of considerable thickness was formed, 18 mm. in the case of zinc and copper, and 15 mm. in the case of cadmium and copper. In the case of lead and tin, a cavity in the end of one metal was filled with mica, so that contact only took place at the edge. An alloy was formed to the thickness of 15 mm., of which 9 mm. were in the tin and 6 mm. in the lead. By the use of cylinders of copper and zinc, in which, owing to a central cavity, contact only took place at the edges, it was found that the surface of the copper above the cavity was coloured by a yellow alloy resembling that formed when copper is subjected to the action of zinc vapour, and which was not due to diffusion from the edges (see also Abstracts, 1893, ii, 168). For the explanation of these results, which are most marked with soft and non-crystalline metals, the author points out the assumption suffices, that the molecules of solids, like those of fluids, do not all move with the same velocity. Reprinted with the permission of the American Chemical Society. Copyright © 2010. American Chemical Society (ACS). All Rights Reserved. [less ▲]

Detailed reference viewed: 18 (0 ULg)
Full Text
See detailHistoire poétique des mérovingiens
Kurth, Godefroid ULg

Book published by Société belge de librairie, F.-A. Brockhaus (1893)

Detailed reference viewed: 17 (2 ULg)
Full Text
See detailUn témoignage du IXe siècle sur la mort de Saint Lambert
Kurth, Godefroid ULg

in Compte rendu des séances de la commission royale d'histoire (1893), III, 3(5e série),

Detailed reference viewed: 11 (5 ULg)
See detailLes corporations ouvrières au moyen âge
Kurth, Godefroid ULg

Book published by Société belge de librairie (1893)

Detailed reference viewed: 14 (0 ULg)
See detailL'Epopée et l'histoire
Kurth, Godefroid ULg

in Revue des Questions Historiques (1893), III

Detailed reference viewed: 5 (0 ULg)
See detailRapport sur le travail de M. G. Alberdingk-Thijm : Les ducs de Lotharingie et spécialement ceux de Basse-Lotharingie aux Xe et XIe siècles
Kurth, Godefroid ULg

in Bulletin de la Classe des Lettres et des Sciences Morales et Politiques (1893), XXV(3e série), 44

Detailed reference viewed: 5 (0 ULg)
See detailNote sur un ouvrage de M. J-P. Waltzing : le Recueil général des inscriptions latines et l'épigraphie depuis cinquante ans
Kurth, Godefroid ULg

in Bulletin de la Classe des Lettres et des Sciences Morales et Politiques (1893), XXIII(3e série), 413

Detailed reference viewed: 10 (0 ULg)
Full Text
See detailLes droits de succession
Galopin, Gérard ULg

Speech (1893)

Detailed reference viewed: 12 (1 ULg)
See detailDas Plateau des Kammer- und Aortenpules
Fredericq, Léon ULg

in Zentralblatt für Physiologie (1893)

Detailed reference viewed: 3 (0 ULg)
Full Text
See detailDétermination de la constante de l'aberration, de la parallaxe de la polaire, de la vitesse du système solaire et des constantes de la nutation diurne, au moyen des observations de latitude de Gyldén et de Peters à Poulkova
Folie, François ULg

in Bulletins de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique (1893), 3e série, t. 26(8), 183-194

L’auteur défend sa théorie sur la nutation diurne et détermine la constante de l’aberration, la parallaxe polaire, la vitesse du système solaire aux moyens des observations de latitude de Gyldén et de ... [more ▼]

L’auteur défend sa théorie sur la nutation diurne et détermine la constante de l’aberration, la parallaxe polaire, la vitesse du système solaire aux moyens des observations de latitude de Gyldén et de Peters à Poulkova. [less ▲]

Full Text
See detailEssai sur les variations de latitude
Folie, François ULg

in Bulletins de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique (1893), 3e série, t. 26(12), 577-613

The diurnal nutation being enough demonstrated by the author, he concluded at the globe fluidity under its solid crust, and as a result of the inaccuracy of the period of 305 days, attributed by the ... [more ▼]

The diurnal nutation being enough demonstrated by the author, he concluded at the globe fluidity under its solid crust, and as a result of the inaccuracy of the period of 305 days, attributed by the astronomers at the initial nutation, period that would be correct only if the Earth was solid. He thus looked for the real length of this period. [less ▲]

Detailed reference viewed: 2 (0 ULg)
Full Text
See detailL'invariabilité de la hauteur du pôle opposée aux variations de la latitude
Folie, François ULg

in Revue des Questions Scientifiques (1893), 33

The author defends his theory of the initial nutation

Detailed reference viewed: 1 (0 ULg)
Full Text
See detailRevendication de priorité
Folie, François ULg

in Bulletins de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique (1893), 3 e série, t. 26(7), 24-30

After the attribution, by Mr. Tisserand, of an important role of the globe internal fluidity in the determination of the latitude variations, the author notes that he has been asserting this importance ... [more ▼]

After the attribution, by Mr. Tisserand, of an important role of the globe internal fluidity in the determination of the latitude variations, the author notes that he has been asserting this importance since 1890 and that he gave for this period a longer duration than Euler. [less ▲]

Full Text
See detailSur les termes du second ordre provenant de la combinaison de la nutation ou de l'aberration et de la réfraction
Folie, François ULg

in Annuaire de l'Observatoire Royal de Belgique (1893), 62

In his research for the second order terms of the nutation and the refraction, the author wondered if there wasn’t need to introduce the apparent declination instead of the true declination.

Detailed reference viewed: 3 (0 ULg)
Full Text
See detailSur les termes du second ordre qui proviennent de la combinaison de l'aberration ou de la nutation avec la réfraction
Folie, François ULg

in Bulletins de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique (1893), 3e srie, t. 25(4), 316-322

In writing the aberration theory, the author noticed the negligence of terms resulting to the combination of the aberration and of the refraction.

Detailed reference viewed: 3 (0 ULg)
Full Text
See detailSur l'invariabilité de la hauteur du pôle déduite des observations de Honolulu
Folie, François ULg

in Annuaire de l'Observatoire Royal de Belgique (1893), 60

According to the author, the astronomers must report their observations and their formulae to the pole and to geographical meridian. His demonstration consists in considering as fixed the three mobile ... [more ▼]

According to the author, the astronomers must report their observations and their formulae to the pole and to geographical meridian. His demonstration consists in considering as fixed the three mobile Earth's axis and as mobile the three Sky's axis, to which we report the motion of the first one. [less ▲]

Detailed reference viewed: 2 (0 ULg)
Full Text
See detailTempératures observées et quantités d'eau recueillies à Uccle depuis le mois de février 1893: phénomènes naturels observés dans la même localité et dans d'autres stations du pays
Folie, François ULg

in Bulletins de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique (1893), 3e série, t. 25(6), 702-709

The author makes a spreadsheet of the observed temperatures and the water quantities collected in Uccle during February, March and April, to which he is adding some natural phenomena observed in this ... [more ▼]

The author makes a spreadsheet of the observed temperatures and the water quantities collected in Uccle during February, March and April, to which he is adding some natural phenomena observed in this locality and other stations of this country. [less ▲]

Detailed reference viewed: 3 (0 ULg)