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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
Brain: The centre piece of the nervous system is the brain which IS possibly the most organised form of matter known. It is unlike any other organ of the body, as ~t alon
Explain the Functions of Mineralocorticoids Aldosterone is the name given to the main physiological mineralocorticoid. As you go through the functions listed below, you will re
Intrusion into the Carbon Cycle In the carbon cycle, as long as the average amount of carbon dioxide hair and in water remains the same, a happy situation prevails. If the te
Vitamin E (Tocopherols) Vitamin E is an essential fat-soluble vitamin that functions, at least in part, as a lipid- soluble antioxidant. Presence of vitamin E was first revea
Emergence of chemistery: Chemistry The level of chemical knowledge and practices in the new ordered society is reflected in the pottery, iron tools and glass objects found at
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
Explain the Posterior Nerve Root Posterior nerve root consists of sensory nerve fibres, having cell bodies in root ganglions and enter the spinal cord. Immediately after emergi
what is a chemical
mode of feeding f a lion
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
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