Some time in the 14th c., a certain Bhāradvāja named Rāma founded a
school of mathematics in Pārthapura (~ 19°N 76°E).
After three generations (Nīlakaṇṭha -> Viṣṇu -> Nīlakaṇṭha) was born Nāganātha, whose son Jñānarāja is the author of the siddhāntasundara (1503). Among J's two sons, Cintāmaṇi and Sūryadāsa, the former wrote the grahagaṇitacintāmaṇi which may be dated to 1550-1580, although Pingree provides 1530.
Cintāmaṇi describes an experiment (see Minkowski's citation) in which an Amalaka fruit and a betelnut are strung on threads and pulled towards the observer with equal force. Replicated on a tower, this is the famous Pisa experiment of Galileo performed around 1590. Curiously, however, it now appears that Galileo himself may have only performed it as a thought-experiment!
After three generations (Nīlakaṇṭha -> Viṣṇu -> Nīlakaṇṭha) was born Nāganātha, whose son Jñānarāja is the author of the siddhāntasundara (1503). Among J's two sons, Cintāmaṇi and Sūryadāsa, the former wrote the grahagaṇitacintāmaṇi which may be dated to 1550-1580, although Pingree provides 1530.
Cintāmaṇi describes an experiment (see Minkowski's citation) in which an Amalaka fruit and a betelnut are strung on threads and pulled towards the observer with equal force. Replicated on a tower, this is the famous Pisa experiment of Galileo performed around 1590. Curiously, however, it now appears that Galileo himself may have only performed it as a thought-experiment!
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