commentariorum in astrolabium (7 resultados)

Encuadernación de tapa dura. Condición: Bien. 1ª Edición. [Para pedidos desde fuera de España, por favor, consulte las condiciones de venta y envío, tipo A. / For orders to be delivered outside Spain, please, let you see our sale and shipping terms, type A. / Pour les commandes à livrer hors d'Espagne, s'il vous plait, voyez les conditions de vente et de livraison, type A].- // [i.e. 1550].- // 1ª edición.- // 4º, (225x154 mm).- [24], 282 [p. 238, mal numerada 248], [12] p.; sign.: a-c4, A-Z4, Aa-Ll4, Mm5 [M6, blanca, ausente], Bb6 (con el índice; el impresor no utilizó las signaturas Aa); 19 tablas, la mayoría a toda página, y 63 grabados xilográficos intercalados en el texto, 15 de ellos a toda página; iniciales grabadas; letra cursiva; apostillas marginales.- // Encuadernación moderna en piel; planos orlados gofrados con autor y fecha grabados en dorado; lomo de cuatro nervios, con tejuelo y adornos grabados en dorado. Portada algo manchada y con pequeñas restauraciones en punta superior y margen inferior; punta inferior del grabado de la hoja E1 restaurada; Mm6, blanca, ausente en este ejemplar; esporádicos puntos de óxido; numerosas y antiguas anotaciones manuscritas en márgenes; feo cálculo manuscrito en margen de p. 25. Buen ejemplar.- // Proc.: Sin datos.- // Refs.: BP16, 114173; Navarrete, Marítima, II, p. 292-293; Nicolás Antonio, Nova, I, 772; Palau, 276066; Picatoste, 703; Tomash & Williams, R108; USTC, 150444.- // Poco se sabe realmente de Juan de Rojas, hijo del marqués de Pozas, más allá de que fue a estudiar a Lovaina, donde se introdujo en el círculo del astrónomo y cartógrafo Regnier Gemma Frisius (1508-1555), quien había sido maestro de Mercator, primero, y colaborador, después. Hacia 1547, Rojas regresó a España y escribió el tratado que ofrecemos sobre la fabricación y uso de los astrolabios. Dedicado al emperador Carlos I, no imprimió su tratado en España, sino en París, en 1550(1), no se sabe por qué. Rojas estructuró su tratado en seis libros, destinando el primero a la Esfera (el Universo, tal como se concebía) y sus partes, dando cuenta mediante tablas de la longitud de la sombra proyectada por el recorrido diurno del sol y la duración del día en diversas regiones. El segundo libro lo dedicó a la averigüación de las declinaciones y las altitudes, de las salidas y puestas del sol y de las estrellas, y a la construcción de relojes de sol, con tablas de las altitudes de los signos zodiacales para una latitud concreta, aproximadamnte la de 42°, que, como corresponde a la casa de su padre en Monzón de los Campos (Burgos), bastaría para justificar dónde preparó este tratado. En el libro tercero, introduciendo la astrología de la que todavía no se había desprendido la astronomía, lo dedicó a ?los hogares celestiales? ?los doce espacios zodiacales? y a la repercusión de sus posiciones en los nacimientos, culminándolo con una carta astral (p. 146) del momento del nacimiento de Carlos I, en Gante. Establecidas estas explicaciones del operar de la naturaleza, en el cuarto libro pasa a la geometría práctica necesaria para sacarles partido, dedicándolo a las dimensiones, en realidad un tratado de altimetría, exponiendo el uso del cuadrado de la sombra para encontrar su longitud y dando una tabla de los cuadrados desde el del 2 hasta el del 662. El quinto libro lo destinó a la planimetría, para lo que acudió a exponer y matizar el método geodésico que había propuesto Gemma el Frisio para reproducir en un plano la distancia a la que se encontraban diferentes lugares, método que había tenido una enorme difusion porque, desde 1533, Gemma lo había incluido en las numerosas ediciones que publicó de su Cosmpographia de Apiano comentada(2). Finalmente, en el libro sexto, justificado el operar de la naturaleza, proprocionadas las formas de leer ese operar y garantizadas las formas de hacer mediciones, expuso el método empleado por su amigo Hugo Helt (ca. 1525-1594)(3), a quien cabría calificar de ingeniero -por su dedicación a la instrumentación: astrolabios, relojes,.-, para c.

*** Ce rare traité décrit deux modèles d'astrolabe. Il est illustré de plus de 60 bois gravés, certains à pleine page. D'une famille castillane noble, Juan de Rojas suivit la cour de Charles-Quint dans les Flandres. Il fréquenta l'université de Louvain, où il suivit les cours de Gemma Frisius, qui devint par la suite son ami. Il se rendit célèbre dans toute l'Europe, en proposant une astrolabe qui utilisait une projection orthographique de la sphère céleste. Le livre V est un commentaire des écrits de Gemma Frisius sur l'astrolabe. Seconde édition, identique à la première de 1550, un seul bois d'après Mortimer est différent. Mortimer, Harvard calogue 462. Brun, Le livre français illustré de la Renaissance 283. Bon exemplaire. *** In-4 de (24), 281, (3), (12) pp. Vélin. (Reliure de la fin du XIXe.) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - * Rojas describes two new types of astrolabe that he developed using an orthographic projection of the celestial sphere. Illustrated by 60 woodcuts. "The chief novelty in both [astrolabes] consisted in a special treatment of the face of the instrument as an orthographic projection of the sphere on the plane of the meridian." (Gunther, Astrolabes of the World). "A scion of the Castilian nobility, Juan de Rojas moved to Flanders with the court of Emperor Charles V and studied with Reiner Gemma Frisius in Louvain. He became famous in Europe mainly thanks to the dissemination of a new type of astrolabe that he developed using an orthographic projection of the celestial sphere. The instrument was unveiled in 'Commentariorum in astrolabium', a widely circulated treatise published in Paris in 1551." (Museo Galileo). Second edition, similar to the first of 1550. - -.

LeatherBound. Condición: New. LeatherBound edition. Condition: New. Reprinted from edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 369.

LeatherBound. Condición: New. LeatherBound edition. Condition: New. Reprinted from 1551 edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 344 Language: Latin.

LeatherBound. Condición: New. LeatherBound edition. Condition: New. Reprinted from 1550 edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 337 Language: Latin.

LeatherBound. Condición: NEW. Leatherbound edition. Condition: New. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. Reprinted from 1551 edition. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 330 Language: Latin Pages: 330.

LeatherBound. Condición: New. LeatherBound edition. Condition: New. Reprinted from edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 325.