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The Copernican Revolution:
It was right in the midst of these developments in the fifteenth century, that there came the first major break from the whole system of ancient thought. This was the work of Copernicus, who gave a clear and detailed explanation for the rotation of earth and other planets on their axis and their motion around a fixed sun which was at the centre. This model simplified astronomical calcuhtions, and also made them more precise. In such a model had been proposed by Greek astronomers like Aristarchus many centuries earlier. However, it was not given any importance because it ran counter to the established ideas of those times. This work of Cope~nicus was published in the very year of his death in 1543. Although his book attracted limited attention and there were objections to his model, his work-gave a great boost to further work by Galileo. We will talk about Galilee's work later in Sec. This was the first phase of what we now call the Scientific Revolution. In this phase, the old ways of thought were proving inadequate. By rejecting the old ideas, the men of Renaissance had cleared the grounds for new ideas of the succeeding century. In the use of science for practical purposes too, the Renaissance set the scene for. future developments. From now on science had become a necessity for profitable enterprises, trade and war.
compare water stills and deionizer
Genetic Engineering: The modem biotechnology revolution is based on the understanding and manipulation of the structure of DNA. DNA is a complex organic molecule that directs
Healing Touch of Lasers: Contrast the above application of lasers with their uses in medicine where the laser is working wonders. A laser can be applied with almost perfect
how does pulse rate increase?
What is ablation? Ans) Ablation is a technological term for the loss of snow and ice from a glacier. The process happens by a combination of the two physical processes, meltin
A glacier that has neither advanced nor retreated for many years deposits:- end moraine
Some Physical Features of the Oceans: The oceans are so vast that they stagger one's imagination. They cover more than 70 per cent of the earth's surface. The depth of ocean
Ascorbic Acid (vitamin C) Although the antiscorbptic (preventing the disease scurvy) effects of citrus hits was known for a long time, the first important step towards its
MMSE To assess Mr. X's orientation, language skills, constructional ability, memory, calculation ability, and reasoning, he was administered the Mini-Mental State Examination -
The Ayurvedic System of Medicine: Punarvasu Atreya (about 6th century B.C.) taught medicine at Taxila. Each of his disciples such as Bhela, Jatukarna, Harita, Ksarapani, Par
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