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12
suggests that JDP concept of practical atom unit has the same atom dimension as the current one. In contrast, the unit of length smaller than atomic one is that of ato13 mic nucleus of 10 cm. This does not coincide with the canonical sma10
llest unit of 10 cm. It is, there fore, reasonable to suggest that trutirenu or practical atom unit should be recognised as standard unit with
6
a value of 10 cm and the canonical descriptions should be made consistent on this basis.
The units smaller than this may be simile-based. the unit of 1/00x00 seems to be imaginary as it does not have a measurable value. This inference does not seem to be consistent with definitions of trasarenu and
2 ratharenu of ADS, but this seems better for accuracy. The ADS definitions of these terms seem to be akin to the Vaisesikas who have trutirenu as their standard length unit equal in size to the colloidal dirt particles seen floating in light path. This unit
5 is almost about 10 times larger than 22
the Jaina smallest unit. The discrepancy between the values of ADS unit and other reference units has to be explained. The common names of some of the units in Jaina
Jain Education International
and Vaisesika systems further suggest about looking into original source of these units.
Besides concurring with the size of atom, the 1.70 cm. value of UA has another result to its credit. If one takes Y-8 miles and PY=500Y= 4000 miles, the velocity of light based on Vedic data comes 10
to be 1,40,930 miles/sec (2.34X10 cm./ sec). The value of 1.90 cm for UA gives this value as 1,87,300 miles
10
(3.10X10 cm) per second. These values are reasonably approaching the current values. This is quite encouraging. But when we move for distances in solar system, we find that we have the distance 14 times larger for moon and 30 times lesser for sun. This discrepancy is awaiting explanation. The other values of UA will increase the discrepancy still further.
It has already been pointed out that the normal angula is 1-d and it is also named as sucyangula. There seems to be some difference in the 12
RV and JDP descriptions of this unit. But JDP seems to be more reasonable. This angula has three varieties as shown in Table IV. It is seen that there is difference beween the values of PA in Digam.
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