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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 ?
Walking Robots: Sit back for a while and try to think of a few advantages our legs have over wheels in moying around. Wheels can't climb stairs. They can't also step ove
Explain the Heat loss and Bacteriolytic action Heat loss - This is found in dog, sheep etc. Who do not have sweat glands? In very hot climate, they secrete more saliva (pant
Define the Sympathetic Nervous System The sympathetic component of the autonomic nervous system is concerned with in- creasing the level of arousal and energy expenditure - pri
Resource Energy: The demand for energy doubles every 14 years and is taken as one of the indicators of development of a country. India, with 16% of the world's population c
Objectives After studying this unit, you should be able to: 1. Categorise different radiations into ionising and no ionising types, 2. Explain the effects of radiations
1. Beta catenin is a protein that translocates to the nucleus in the presence of Wnt ligand. In the absence of Wnt, beta catenin is targeted for degradation. Using a cell line fro
Explain the Normal Constituents of Urine The normal constituents of urine are of two types. These are the organic substances and the inorganic substances as listed Organic
Objectives : After completing this exercise you should be able to check the stock register, 1. verify the physical presence of articles present in the lab as per the stock regi
What is the common name for the test that provides the hardness of the material by the size of an indent left in it by a standard steel ball? The Brinell Test
Which minerals best illustrates the property of cleavage: Mica
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