File:Tablas Alfonsíes - Lignères (1322) - P043-045.png

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Captions

Captions

Alphonsine Tablas - Sinus table

Summary[edit]

Description
Español: Traducción desde las tablas del año 1322 (Tablas de Alfonso), obra de Juan de Lignères. Agregüé unas columnas en el actual sistema decimal correspondiente al sistema sexagesimal ptolemaico.

La tabla tiene dos columnas para el argumento, hacia abajo desde 0;30° a 90;0° y hacia arriba de 90;0° a 179;30°, a intervalos de medio grado. Hay otra columna para los valores del seno del argumento, aquí llamado corde mediate, expresado en grados, minutos y segundos. Las entradas corresponden al seno del argumento, con un radio unitario de 60 [partes], y alcanzan un valor máximo de 60;0,0° a 90°. Esta tabla suele presentarse como seis bloques de 15° cada uno.

La misma tabla se encuentra en las Tablas Toledanas (ver Pedersen 2002, pp. 957–959), en última instancia, derivado de aquel en el zij de al-Battānī (ver Nallino, 1899-1907, 2: 55-56). También se menciona en los capítulos 1 al 6 y 10 de los cánones que comienzan con Cuiuslibet arcus (ver Saby 1987, págs. 75–77.).

NdT: del libro "The Tables of 1322 by John of Lignères. An Edition with Commentary" de José Chabás y Marie-Madeleine Saby. Págs. 43-48. 2022, Brepols Publishers n.v., Turnhout, Belgium.
Date
Source Own work basado en los datos del "The Tables of 1322 by John of Lignères. An Edition with Commentary" de José Chabás y Marie-Madeleine Saby.
Author
Fernando de Gorocica  (1962–) wikidata:Q104764450
 
Fernando de Gorocica
Description Argentine amateur astronomer
Date of birth 2 August 1962 Edit this at Wikidata
Location of birth Buenos Aires
Work location
Ciudad Jardín Lomas del Palomar; Villa Gesell Edit this at Wikidata
Authority file
creator QS:P170,Q104764450

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