Bīrūnī, Muḥammad ibn Aḥmad, Alberuni's India (v. 2)

(London :  Kegan Paul, Trench, Trübner & Co.,  1910.)

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68
 

ALBERUNTS INDIA.
 

country, i fctisctkh —-^ miles, we get 6'/2Sfarsctkh; and
reckoning i farsctkh = 16,000 yards, as is mentioned by

'Page 234. Yakub, we get ^046 fctrsctkh. Eeckoning i yojana =
32,000 yards, we get 2523 yojanas.

Distances of      The following table is borrowed from the book of

the planets    ^7- ti at    ti       t-a   -i

frointhe      YaKUD iDn iariK :—

centre ofthe
earth, and
their dia¬
meters, ac¬
cording to
Yakiib Ibn
Tarik.
 

Page 23s.
 


 


 

The conventional
 


 

,neti
 

Their distances from the
 

measures of the
distances, differing
 

Their constant

measures, based

on the radius of

the earth = r.
 

'he pla
 

centre of the earth, and their
 

according to time
 

diameters.
 

and place, reckoned
in farsakh, i farsakh
 

c-i
 


 

= 16,000 yards.
 


 


 

Radius of the earth
 

1,050
 

I
 

«■   i
 

The smallest distance   .
 

37,500
 

35f
 

§
 

The middle distance
 

48,500
 

46/T
 

^   i
 

The greatest distance   .
 

S9,ooo
 

56A
 


 

Diameter of the moon
 

5,000
 

4lf
 

k> ,
 

The smallest distance   .
 

64,000
 

6o|^
 

3   \

0   <
 

The middle distance
 

164,000
 

i56^T
 

a>   1
 

The greatest distance   .
 

264,000
 

25if
 

Diameter of Mercury
 

5,000
 

,10
4-5'T
 

§  f
 

The smallest distance   .
 

269,000
 

2562*1
 

M
 

The middle distance .    .
 

709,500
 

675f
 

!^l
 

The greatest distance    .
 

1,150,000
 

i,o95A
 


 

Diameter of Venus
 

20,000
 

i9^V
 

. (
 

The smallest distance   .
 

1,170,000-
 

i,ii4f
 

M
 

The middle distance
 

1,690,000
 

i,6o9-^-{-
 

rM    [
 

The greatest distance    .
 

2,210,000
 

2,I04|f
 


 

Diameter of the Sun .
 

20,000
 

I9¥T
 

«■    f
 

The smallest distance   .
 

2,230,000
 

2,123-2-x
 

s\
 

The middle distance
 

5,315,000
 

5,061^4
 

s I
 

The greatest distance
 

8,400,000
 

8,000
 


 

Diameter of Mars
 

20,000
 

19^1
 

g (
 

The smallest distance   .
 

8,420,000
 

8,oi9Jt
 

•s.i
 

The middle distance
 

11,410,000
 

io,866|
 

S^
 

The greatest distance    .
 

14,400,000
 

I3,7i4f
 

t-3
 

Diameter of Jupiter  .
 

20,000
 

i9yV
 

s {
 

The smallest distance   .
 

14,420,000
 

i3,733i
 

a  }
 

The middle distance
 

16,220,000
 

i5,447ff-
 

^   (
 

The greatest distance   .
 

18,020,000
 

i7,i6Uf
 


 

Diameter of Saturn   .
 

20,000
 

19A
 

«  (
 

The radius of the outside
 

20,000,000
 

I9,047if
 


 

The radius of the inside
 

19.962,000
 

i,866| (sic)
 

Zodia
 

Its circumference from
 


 


 

the outside
 

125,664,000
 


  Page 68