A Concise History of Science in India c18.22

c18.22

Indian alchemists, 328 Indian alchemy, 313–18 origin of 316–18 Indian Association for the Cultivation of Science, 561–62, 605 Indian Institute of Science, 566 Indian Museum, 528–30, 604 Indian Science Congress Association, 566 Indices, laws of, 161–62 Indigo, 366, 395, 562, 599 Indo-Aryans, 283–84 Indu, 227 Induction, method of, 488 Indus inches, 138 scale, 137 Industrial schools, 549–50 Indus Valley Civilization, 2, 6–8, 275–76, 351 Inequality of the sun, 113 Initial point of the Hindu sphere, 69 Inorganic remedies, 55, 253–54 salts, 55 Inscriptions, Harappan, 8 Insects, 421, 422 Instruments, masonry (astronomical), 129–30 Intercalary months, 75, 85, 87 Intercalation, 16, 85 Interest, 164 Inverse rule of three, 182–83 Iron, 11, 304, 323, 577–78, 583–84 Age, 12–14 arrow-heads, 13 axes, 13 chisel, 14 crowbar, 14 dagger, 14 hoe, 14, 289 hook-lamps, 14, 289 knife, 14 metallurgy of, 287–90, 301 objects, 287–88 pick-axe, 14 Pillar at Delhi, 299, 591 Pillar at Dhar, 340 saucer, 14 sickle, 14 spade, 14 spearheads, 13 sword, 14 tripod, 14 wedge, 14 Iron and steel, industry of, 563 Irrational numbers, 154–56, 576 Irrigation, 351, 353, 360–61, 367 *Īṣā Upaniṣad*, 21 Ismatu'llāh as-Sahāranpūrī, 52, 208 Isostasy, theory of, 506–7 Īśvarakṛṣṇa, 29 I-tsing, 53, 226