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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 ?
Science in the post-renaissance period (1540- 1760): We have seen above that improved techniques as well as growing trade had led to great voyages to many lands. These were
i need some facts about them
It is estimated that the temperature of the Earths core is: as hot as the surface of the sun
Monosaccharides and amino acids are absorbed into the blood in the intestinal capillaries. Is it true or False?
Explain Hypoxia and its Types Hypoxia is the oxygen deficiency at the tissue level below the physiological level. There are four types of hypoxia. Let's get to know them. 1.
Explain the Hyposecretion or Hypothyroidism during Infancy Decreased secretion of thyroid hormone results in the development of the condition known as cretinism. There is a lac
ecological characteristics of deserts
Making a simple reflecting telescope A simple reflecting telescope can be made from a concave mirror obtained from a shaving mirror. The mirror is arranged wooden box of suitabl
A rock weighs 33.6 N on Planet X and 49 N on Earth. What is g on Planet X?
Give reason for the benifits of our technological development not reaching all the strata of our society.
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