506 Synopsis of Mahomedan Science. 



V5L5:* tujaooz, optical refraction. 



^AJOJLtJJ «_11)IS zat ul suqbutyn, name of a sort of micro- 

 meter. 



uU&3» jyb, a sine, pias] *■-«;>=• 7^6 anzum, is used for ra- 

 dius in trigonometry. 



j^jy^jozuher, sphere of the moon, the poles of which 

 coincide with those of the ecliptic. 



r±\-s* haduh, acute as an angle. 



jj^j^a^ huzeez, perigee. 



J»«l&. hamul, deferent in the old astronomy. 



^LiJaXoUi *lAs» hulquh shamil oofuqee, name of a sort 



am 



of altitude and azimuth instrument. 



^As.'ldjJS zat ul hulaq, name of a sort of armillary 

 sphere. 



d**«*** PJ^** kharij qusmut, quotient. 



^0"*^2 J^ kharij ul murkuz, the eccentric in which 

 the sun or a planet is supposed to move round the centre of 

 the world. 



jLJJjJjsx-o ljjb> daeruh madul ul nihfir, equinoctial circle. 



g. j.*}]2&\a.Lo s»j|^> daeruh muntuq ul burooj, ecliptic. 



auw,Jv_— Aloi'lj 5jb> «*j!^ daeruh maruh baquteb urubuh, sol- 

 stitial colure. 



J*k> ^jI^j daeruh myl, circles of declinations are so 

 named. 



[jojs. *j&]& daeruh uruz, latitude. 



(j.9) oqfuq, horizon. 



jlyiSJ u-A/ai wes/" wZ nihar, meridians. 



d»j«.*Jl J^f aww/ 00s sumoot, prime vertical. 



clsu.1 irtif au, elevations. 



u*1j ras, is used for node, perhaps for a quadrant be- 

 yond it. 



