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JANUARY, 1983
had conceived some other planetary cycles like twelve-year cycle of Jupiter, twenty-eight year cycle of Saturn and later a cycle of sixty Jovian years etc.
Besides, it is worth mentioning that the ratio 3:2 of maximum and minimum lengths of the day is frequently used in Vedānga Jyotisa and Jaina calendar. By applying Barnoulli's theorem to account for the error due to rate of flow of water through the orifice of water clepsydra, it is revealed that the ratio 3:2 between amounts of water to be poured into Clepsydra on maximum and minimum lengths of the day corresponds to the actual time ratio v3: v2 between actual maximum and minimum lengths of daylight. This ratio V3:12 belongs to a latitude very near to that of Ujjayini, a renowned seat of ancient Indian culture.28
6. Cycles of Eclipses
Jaina forty-two-eclipse months cycle of lunar eclipses and fortyeight-eclipse years cycle of solar eclipses were based upon observation of periodic repitition of eclipses in five different colours irrespective of any accurate knowledge of true motion of Rahu (lunar ascending node). These eclipse cycles are completely free from any foreign influences of Chaldean Saros or Metonic cycle. 29
7. Lunar Occultations
Jaina concept of direction of lunar conjunction with a nakşatra implies the notion of position of identifying star (of the nakşatra) with respect to the region where the Moon moves among the stars. Belt of lunar zodiac was properly specified. 30
8. Measurement of Celestial Distances
Celestial angular distances were measured in yojanas (basically, linear measures of length) in terms of corresponding distances projected over the surface of earth. The real determinations of distance degrees fit the actual geometry of the earth.31
28 See f.n. No. 24. 28 Lishk, S. S. and Sharma, S. D. (1967), 'Cycles of Eclipses in Jaina Astronomy',
Sumer Chand Memorial Volume, pp. 40-48 (Jabalpur). 30 Lishk, S. S. and Sharma, S. D. (1976), 'Lunar Occultation in Jaina Astronomy',
Tulsi Prajna, Vol. 1, No. 3, pp. 64-69. 31 See f. n. No. 20. Jain Education International For Private & Personal Use Only
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| SR No. | 520069 |
| Book Title | Jain Journal 1983 01 |
| Original Sutra Author | N/A |
| Author | Jain Bhawan Publication |
| Publisher | Jain Bhawan Publication |
| Publication Year | 1983 |
| Total Pages | 36 |
| Language | English |
| Classification | Magazine, India_Jain Journal, & India |
| File Size | 2 MB |