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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
why say f=ma
Explain the Medulla Oblongata The medulla extends from the pons above and is continuous with the spinal cord below as can be seen in Figure. It is about 2.5 cm long shaped like
Name 2 places on earth where continental glaciers exist: Antarctica And Greenland are the two place where continental glaciers exist:
in a reaction 5.3g of sodium carbonate reacted with 6g of ethanic acid. theproducts were 2.2 g of carbon dioxide , 0.9g water and 8.2 g of sodium ethanoate, show that these observa
Respiration: Food + oxygen -> carbon dioxide + water + energy Food is not only a source of energy, but also the nutrients used to build up the organisms' bodies. So we
What makes streams look muddy? After a heavy rainfall have peoples take samples of running muddy water in glass jars. Let the water stand for many hours unless the sediment has
what is ment by general organization in phylum annelida
how can color help
Interstellar and Intergalactic Space: The space between the stars and the galaxies looks empty, doesn't it? But this 1s not true. In the great dark between stars in the galaxie
Making a housing box for weather instruments Some of your weather instruments must be uncovered to the weather. Between these are the wind vane, the wind speed indicator and th
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