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Floating a needle on water
Thoroughly dry a steel needle. Place it on the tines of a dinner fork and gently smash the surface of the water in a dish with the fork. If you are careful the needle will float as you take the fork away. Look at the water surface closely. Can you see how the surface film seems to curve under the weight of the needle ?
Will we ever go beyond The Milky Way to explore other galaxies?
What is International Enzyme International Enzyme :- the amount of enzyme that catalyses the transformation of 1 mole of substrate into product in 1 minute.
Why does marble rarely contain fossils? This is due to of the way that it is formed. When you have a rock that is formed bymetamorphosis then it has been created by heat and pres
what is risk?
How old is the earth Ans) The earth has only very freshly been accurately dated. Until astonishingly recently, the earth was thought to be anywhere among a few hundred thousand
Venus-the Clouded Planet Venus, our nearest planetary neighbour, only 40 million km away, has its surface hidden from view by a dense yellowish-white cloud, which extends to 80
Water Pollution Pollution of fresh water is one of the most serious environmental problems of the world as a whole. In our country most of the rivers and lakes are polluted
Determine the structural units of silicate clays The tetrahedral and octahedral sheets are the fundamental structural units of silicate clays. They bound together within the cr
Define Proteins - Abnormal Constituents of Urine Proteins: Abnormal amounts of proteins are excreted in certain inflammatory diseases like glomerulonephritis (inflammation of t
what is atom
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