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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
phylum porifera
what is the passage for both air and food ?
Riboflavin (vitamin B2) Riboflavin was isolated in a crystalline form from milk by Kuhn and co-workers in 1933. Because of this, the early name of the vitamin was la
Introduction : In any laboratory dealing with biological experiments, hazards can occur mainly due to chemicals and biological materials. In the previous exercise you have done th
Explain Haemophilia Haemophilia is a disease characterized by excessive bleeding due to deficiency of clotting factor VIII. The patient need repeated blood transfusion or may
Checking Breathing and Pulse : Before attempting to resuscitate a casualty, it is essential that you check his/her breathing rate and pulse. You can cause problems if you attempt
Chemistry in golden era: Chemistry In the field of metallurgy too we notice some remarkable developmenk. Before the close of the sixteenth century, zinc was isolated by a pr
INTRODUCTION: Here, we shall explain the regulations which are directly or indirectly concerned with laboratory work. These regulations have legal validity. As compared to laborat
Here this study gives the health hazard data and the treatments for some of the compressed gases. Generally the standard procedure in gas based accidents is as follows: (1) Remo
advantages of Vogel''s approximation method
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