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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
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
what is the meaning of element
Dental Clinic Case Study A clinic with three dentists and several dental hygienists needed a system to help administer patient records. This system keeps patient details and m
Introduction : Here you have need to about the fire hazards, various causes of fires and the precautions to be taken to avoid them. You also learnt about various types of fire ext
what is Anemia?
In what way is crop rotation good for soil management? Continuous cultivation of a single crop over the years on the same site causes accumulation of a particular group of micr
How to identify errors in an experiment (like a word problem)
What are the three major types of rocks? Ans) The three kinds of rocks are as follows: 1) Igneous rock (from volcanoes etc) 2) Sedimentary rock (Dead Sea creatures, time
a. A point source of 60 Co emits equal numbers of photons of 1.17 and 1.33 MeV giving a flux density (i.e. fluence rate) of 5.7 * 10 9 photon cm -2 s -1 at a specified location
Explain Genetic Theory of ageing Rate of ageing varies between species. The difference is in the genetic changes in the species. Thus it can be said that gradual impairment of
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