The Gupta Empire and its neighbours: its rulers, coins and the Iron Pillar, the traveller Faxian, and the work of Aryabhata, Varahamihira and Kalidasa.
| Aryabhata | Aryabhatiya (mathematics and astronomy) |
| Varahamihira | Brihat Samhita; lived in Ujjayini |
| Kalidasa | Sanskrit poet and playwright |
| Faxian | Chinese traveller, early 5th century CE |
| Pallava capital | Kanchipuram |
| Vakataka capital | Nandivardhana, near Nagpur |
| Kamarupa | in present-day Assam |
| Time conversions | 1 minute = 60 s; 1 day = 86,400 s |
Aryabhata’s year was 23 minutes 45 seconds longer than the modern value. (a) How many seconds is that? (b) How much would it add up to in 1200 years? (c) About how many whole days is that?
Working: 23 × 60 + 45 = 1,425; × 1200; ÷ 86,400
Answer: (a) 1,425 seconds (b) 475 hours (c) about 19 days