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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.
Use the following procedure for fire fighting. (1) Always take a position between the fire and the exit so your escape route cannot be cut off. Fire extinguishers should always
What is Soil Aggregation and explain its beneficial role Some organisms may play a beneficial role indirectly by creating better soil physical conditions e.g., by improving soi
What is vision and how is it connected to the brain?
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100 W m-2 + 4.56 J s-1 m-2 – 23.567 W m-2 =
Visible and Invisible Radiation: Light is very much a part of our existence. Without it we cannot see; It Iends colour to the world around us. Light is also termed as visible
Granulocyte macrophage colony stimulating factor (GM-CSF): Stem cells obtained from the bone marrow are capable of giving rise to countable colonies of daughter cells in splee
ray optics
Explain Automaticity - Properties of a Beating Heart Take out my heart from my body and it will still go on and on beating. How true! Even a completely denervated heart eom the
The Asteroid Belt-Rubble of the Solar System: There is a gap of 547 million kilometers, between the orbits of Mars and Jupiter. In this gap are thousands of bodies made of ro
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