The Astronomical Observatories of Jai Singh c5.56

c5.56

¹ Cf. Alberuni *Chronology of Ancient Nations* (p. 11), who writes: "It is impossible to fix the parts of the greatest circle by means of the parts of the smallest circle. I refer to the smallness of the instruments of observation in comparison with the vastness of the bodies which are to be observed. On this subject I have enlarged in my book called *Kitāb-al-istishhād bikhtilāj-al 'arṣād.*" L.P.E.A. Sédillot [p. cxxix] gives the following interesting quotations: "Si j'avais pu, disait Eln-Carfa, faire un cercle qui s'appuyat d'un coté sur les Pyramides et de l'autre sur le mont Mocattam, je l'aurais fait; car plus l'instrument est grand, plus les operations sont justes."