The Positive Sciences of the Ancient Hindus c5.s3.t6: Rotatary Motion (भ्रमण)
The Positive Sciences of the Ancient Hindus c5.s3.t6
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Rotatary Motion (भ्रमण)
c5.s3.t6.1
Each particle of the rotating body, *e.g.* the potter's wheel (चक्र), has, at any given instant, a motion in a definite direction. The rotatory motion of the body results from the separate motions of the particles and their persistent tendencies (संस्काराः), joined with the fact of the rigid conjunction of the particles. When the rod strikes one part of the wheel, the motion in the part struck is in the first instant produced by impact (अभिघात); while the other parts move through the transmission of force due to the rigid cohesion of parts. The subsequent motions in the part struck are due to continued pressure (नोदन) and the persistent tendency (संस्कार) set up by the first motion; while the subsequent motions in the other parts are explained by their own persistent tendencies and the transmission due to rigid cohesion. When the rod is disjoined from the wheel the rotatory motion continues, being due merely to the persistent tendencies in the constituent parts and the resultant persistent tendency in the whole.
c5.s3.t6.2
Other varieties of curvilinear motion in bodies are to be similarly explained (*i.e.* by the composition of Vegas) (तथा चक्रादिषु अवयवानाम् पार्श्वतः प्रतिनियतदिग्देशसंयोगविभा-गोत्पत्तौ यदवयविनः संस्कारादनियतदिग्देशसंयोगविभागनिमित्तं कर्म्म तत्-भ्रमणामिति । श्चमादयो गमनविशेषाः—Praśastapâda,—कर्म्मग्रन्थ । एवं वेगात् दण्डसंयोगचक्रावयवे आद्यं कर्म्म दण्डसंयोगात् । अवयवान्तरेषु च संयुक्तसंयोगात् दण्डसंयुक्तस्य अवयवस्य उत्तरोत्तरकर्म्माणि संस्कारात् नोदनात् च । अपरेषां संस्कारात् संयुक्तसंयोगात् च दण्डविगमेतु चक्रे तदवयवेषु च संस्कारादेव केवलात् श्वमादयो गमनविशेषाः—Śrīdhara).
Linked texts (1)
- Padārthadharmasaṅgraha — Praśastapāda, Sanskrit