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Josef (also José or Joseph) de Mendoza y Ríos (1761–1816) was a Spanish astronomer and mathematician of the 18th century, famous for his work on navigation. The first work of Mendoza y Ríos was published in 1787: his treatise〔(FUNDACIÓN MAPFRE - CT001. Obras clásicas de náutica y navegación. )〕 about the science and technique of navigation in two tomes. He also published several tables for facilitating the calculations of nautical astronomy and useful in navigation to calculate the latitude of a ship at sea from two altitudes of the sun, and the longitude from the distances of the moon from a celestial body. In the field of the nautical instruments, he improved the reflecting circle.〔On an improved reflecting circle. Philosophical Transactions, 91 (1801): 363-374.〕 In 1816, he was elected a foreign member of the Royal Swedish Academy of Sciences. == His work == 1. Tratado de Navegación. Tomo I y tomo II, Madrid, Imprenta Real, 1787. 2. Memoria sobre algunos métodos nuevos de calcular la longitud por las distancias lunares: y aplication de su teórica á la solucion de otros problemas de navegacion navegacion. Madrid, Imprenta Real, 1795. 3. Colección de tablas para varios usos de la navegación. Madrid, Imprenta Real, 1800. (Traducida al inglés al año siguiente). 4. Table des latitudes croissantes Connoissance des Temps… pour l’annee comune 1793 (1791): 303. 5. Mémoire sur la methode de trouver la latitude par le moyen de deux hauteurs du soleil, del’intervalle de tems écoule entre les deux observations, et de la latitude estimée. Connoissance des Temps pour l’année comune 1793 (1791): 289-302. 6. Mémoire sur la méthode de trouver la latitude par le moyen de deux hauteurs du soleil, de l'intervalle de temps écoulé entre les deux observations et de la latitude estimée, … (), (), ().8°, 14 p. et planche. 7. Memoire sur le calcul de la longitude en mer, par les distances de la lune au soleil et aux étoiles. Connaissance des Temps… (1796–1797): 258-284. 8. Recherches sur les solutions des principaux problemes de l'astronomie nautique. Philosophical Transactions, 87 (1797): 43-122. 9. Recherches sur les solutions des principaux problemes de l´astronomie nautique. London, (), 1797.4º, 4 + 85 p. 10. Tables to correct the observed altitudes of the sun, moon and the stars. London, (), ()4º, 92 p. 11. On an improved reflecting circle. Philosophical Transactions, 91 (1801): 363-374. 12. On an improved reflecting circle London, W. Bulmer, 1801.4º, 14 p. 13. Tables for facilitating the calculations of nautical astronomy, and particularly of the latitude of a ship at sea from two altitudes of the sun, and that the longitude from the distances of the moon from the sun or a star, and particularly of the latitude of a ship at sea from two altitudes of the sun, and that of the longitude from the distances of the moon from the sun or a star; containing the natural versed – sines to every 10 seconds, and the logarithmic-sines, double-sines, versed-sines, &c. to every minute from 0 to 80 degrees; and several other tables, useful in astronomy and navigation. London, R. Faulder, 1801. 4º, 8 + 311 + 77 p. Appendix, containing tables for clearing the apparent distances of the moon from the sun or a star, from the effects of parallax and refraction. By H. Cavendish: 77 p. at end. 14. A complete collection of tables for navigation and nautical astronomy, with simple, concise and accurate methods for all the calculation useful at sea; particularly for deducing the longitude from lunar distance, and the latitude from two altitudes of the sun and the interval of time between the observations. London, printed by T. Bensley, sold by R. Faulder, etc., 1805. Folio, 12 + 47 + 670 p. + 1 h. 15. A Complete Collection of Tables for Navigation and Nautical Astronomy. With simple, concise and accurate methods for all the calculation useful at sea. Connaissance des Temps… pour l’an 1808 (1806): 443-447. 16. A Complete Collection of Tables for Navigation and Nautical Astronomy. With simple, concise and accurate methods for all the calculation useful at sea; particularly for deducing the longitude from lunar distance, and the latitude from lunar distance, and the latitude from two altitudes of the sun and the interval of time between the observations. 2nd ed. improved. London, T. Bensley, 1809. 4º, 6 p. + 1 h. + 604 p. + 58 p. + 1 h. 17. Tables for facilitating the calculation of nautical astronomy. London, 1812. 18. Forms for the ready calculation of the longitude... with the Tables published by Joseph de Mendoza Ríos. London, Black, Parry, & Co, 1814.4º, () + () p. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Josef de Mendoza y Ríos」の詳細全文を読む スポンサード リンク
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