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Instruction in the Elements of the Art of Astrology

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205. Ha1 yurraf maqlidxr a jrh al-kawgkib. The<br />

diameter o m ra6ius <strong>of</strong><br />

<strong>the</strong> earth: Ptoleny,deterxn<strong>in</strong>ed this by <strong>the</strong><br />

SIZE OF differences <strong>of</strong> hisApo<strong>in</strong>t <strong>of</strong> view (parallax)<br />

THE STARS ikhtilzf al-mangar, He also determ<strong>in</strong>ed<br />

<strong>the</strong> diameter <strong>of</strong> %e sun <strong>in</strong> <strong>the</strong> same ratio<br />

from eclipses <strong>in</strong> Book V <strong>of</strong> <strong>the</strong> Almagest. The ratios <strong>of</strong><br />

<strong>the</strong> diameter <strong>of</strong> <strong>the</strong> planets and fixed stars to that <strong>of</strong><br />

<strong>the</strong> sun.is obvious to <strong>the</strong> eye. What <strong>the</strong>se are is expla<strong>in</strong>ed<br />

<strong>in</strong> <strong>the</strong> Book <strong>of</strong> <strong>the</strong> lJanshiirEt2 and we have recor&-<br />

ed <strong>the</strong>m <strong>in</strong> <strong>the</strong> accompany<strong>in</strong>g table, <strong>in</strong> accordance with<br />

<strong>the</strong> op<strong>in</strong>ion and results <strong>of</strong> Ptolemy s<strong>in</strong>ce no o<strong>the</strong>r has<br />

hi<strong>the</strong>rto established itself with us.1<br />

Sun<br />

Moon<br />

Saturn<br />

Jupiter<br />

Mars<br />

Venus<br />

Meroury<br />

Stars 1st magnitude<br />

2nd<br />

W<br />

3rd<br />

W<br />

4th n<br />

5th n<br />

6th<br />

W<br />

1<br />

1 (at mid-distance)<br />

1/18<br />

1/12<br />

1/20<br />

1/10<br />

1/15<br />

1/20<br />

4/81<br />

5/109<br />

1/24<br />

2/55<br />

1/36<br />

.......................................................<br />

1 PP, zfflkl tB aknUn kasf-rE andar In sukhun va jahd<br />

kardan naeftfm va nah andIsha kasMdan. Because up to<br />

this time we have not found any o<strong>the</strong>r person work<strong>in</strong>g at<br />

his topic.<br />

<strong>of</strong>. Nall<strong>in</strong>o, bl-EKittZnI 1 288 and 11, IXYI and delete<br />

nr? <strong>in</strong> bJ3.

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