The Many Uses of the Marine Sextant, A brass sextant is a beautiful instrument with knobs, slides, scales, mirrors, magnifiers, and lens.
El principio y la primera caída El hombre ha caído de un estado superior del ser hace aproximadamente unos 450,000 años atrás (tal vez más o menos, las fechas son insignificantes dentro de estas lí…
newton & sonThis rare 19th century orrery has an unusual pulley system to simulate the motions of the Earth and the Moon. The wooden base is covered wit...
キャンプ場や、富士山スカイライン５合目など、天体観測に向いたスポットはいくつがあるが、もっと天体の知識を身につけたい！ という人には、各地の天文台で行なわれている「観望会」の参加がおすすめ。天文学のプロとふれあいながら、個人では所有できない
Antique brass orrery planetarium made for the German market by Jan Felkl Prag in the second half of the nineteenth century. Cast iron base, papier mâché´ globe, with detailed territorial map and oceanic currents. Very good condition. Measures: Length 75 cm - 29.5 inch, height 48 cm - 18.8 inch, width 28 cm - 11 inch. Shipping in insured by Lloyd's London and the gift box is free (look at the last picture). Jan Felkl (1817-1878) was born in Bohemia and already in 1840 he had designed some globes in 6 different sizes. During the following 20 years he became the biggest maker of globes in market Austro-Hungarian, making terrestrial and celestial globes in 17 different languages, lunar globes and planetaria. Felkl showed his globes at international fairs in 1867 in Paris and in 1873 in Vienna. He established his Geographic and lithographic Institute in Prague for Making globes and maps. In 1870 he moved his factory from Prague to Roztok and his youngest son became his partner in the firm now named Felkl & Son, making globes and selling them all over the Europe and also in the Usa. Shipping is insured by Lloyd's London; our gift box is free (look at the last picture). The orrery is the most detailed and complex representation of the cosmos and in addition to the movement of stars,it includes movement of the sun, moon and planets, like a giant clock mechanism. Among these devices one of the oldest was an orrery by Archimedes, which Cicero speaks widely in Tusculanae Disputationes I, 63: when Roman troops sacked Syracuse in 212 BC, the consul Marcus Claudius Marcellus in Rome brought the instrument of Archimedes, who, thanks to his ability and divine intelligence that he possessed, had managed to generate the motions of planets, each so different, from a single rotation.Because of heliocentric system theorized by Copernicus, it was possible to create mechanical antique orreries that were model of the Universe more and more accurate and precise, with the Earth revolving and turning aroud the Sun at the same time.
Maker: ‘Umar ibn Yusuf ibn ‘Umar ibn ‘Ali ibn Rasul al-Muzaffari. Object Name: Astrolabe. Date: dated A.H. 690/ A.D. 1291. Geography: Made in Yemen. M...
An armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of objects in the sky (in the celestial sphere), consisting of a spherical framework of rings, centre…
by Stephen J. Gertz Tycho Brahe (1546-1601), a Danish nobleman and gentleman scientist, made the most precise astronomical and planetar...
Fig. 27 – Wooden Quadrant built by Paul Hainzel (Burgomaster of Augsburg and a friend of Tycho Brahe), illustrating Tycho Brahe’s work ‘Astronomia Instaurate Mechanica‘ (1598).
Dorm accessories don't have to be basic. Here are our top choices to create a chic and cozy dorm room that you won't want to leave.
