………………of 11th century proposed the idea that rainbows were the result of the contacts between sunlight and moisture in the air, while Shen Kuo expanded upon this with the description of atmospheric refraction.

Related MCQs

• The two most important scientists of the medieval …………..were Shen Kuo and Subsistence Song; both lived in the 11th century.
• The Greek Scholar ……………had established the fundamentals of the Unani on which the Arab physicians like Rhaza in 10th century and Avicenna in the 11th century constructed an imposing edifice.
• The Abbasid rule lasted till the 11th century when they were ousted from power by the ……………...
• ………………… was the first to assume that colour and light are of the same nature and the discoverer of the curvature of light through atmospheric refraction.
• The scholar official ………………..of 11th century, in his ‘Bencao Tujing’ not only systematically categorized herbs and minerals according to their pharmaceutical uses, but regions they could be found.
• The growth of …………….industry during the 11th century paved way for vast deforestation due to the use of charcoal in the smelting process.
• The 11th and 12th centuries were a period of relative calm as far as the ………………Empire was concerned.
• From the middle of the 14th century to the …………century Deccan and some parts of South India was dominated by the Vijayanagara and Bahmini kingdoms.
• The Delhi Sultanate was established by the Turks in the 13th century, which lasted till the …………..century.
• The early medieval period in the history of China was marked by the efficient rule of the …………………dynasty, which had lasted from 7th century to early 10th century.