The Positive Sciences of the Ancient Hindus c5.s2.t1.12

c5.s2.t1.12

(2) Motion due to direct contact for an instant with a body that strikes and produces an impact (अभिघात), *e.g.* in the cases of a stone falling against a hard object (पाषाणादिषु निष्ठुरेवस्तुनि अभिपतितेषु—Śrîdhara), the potter’s rod striking the wheel, the mortar struck against the pestle. Instantaneous disjunction is necessary to impact. If there is continued contact, the result is pressure (नोदन). In some cases there may be disjunction (*i.e.* a rebound) after continued pressure (यत्र अभिघातकं द्रव्यं भूमदेशं अभिहत्य किञ्चिदधो नोत्वा उत्पतति—श्रीधर—न्यायकन्दली).