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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 suitable size in such a way that it can be tilted at dissimilar angles. An upright made of wood is attached to the box so that its angle may also be varied. Two short focus lenses are fixed in corks which are then placed in a short length of mailing tube as an eye-piece. Then join this eye- piece attached to the wood upright exactly at the focal
Lead Times of Scientific Development: When we compare the current status of scientific development and technological fall-out from the same, we find that the lead time of scien
To show how water rises by capillarity Colour some water in a shallow dish with ink and touch a blotter to the water surface. Observe how the water increases in the blotter.
State about the Soil Aggregation and Soil Structure In the context of soils the term 'structure' refers to the shape that the soil takes. It may exist as individual particle or
Explain Increased Cardiac Output i) An increase in blood volume increases the venous return and leads to an increased stroke volume. The increase in the blood volume may be d
Explain physical barrier for External Defence Mechanism - Skin It provides nice protective covering to the body. The outer layer- horny layer - contains dead keratinized cells
Define The Limbic System The limbic system, like you would realize, is as well referred to as the emotional brain. It is found buried within the cerebrum. This system consists
A stone seems to weigh less in water Weigh a large stone on a pair of kitchen scales. Put a loop of heavy string around the stone and weigh it again suspended in a pail of wate
How are fossils formed? Ans) Fossils are formed amongst periods of rock formation, and caused by the gradual accumulation of sediment above millions of years at the bottom, mos
HAZARDS IN THE LABORATORY : Laboratories in the biology department of schools, colleges and universities and other higher level organisation such as hospitals, veterinary esta
give the importants segnificant figure in measure quantities
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