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How to make a simple vacuum pump
Secure a bicycle or automobile hand pump. Open the pump and delete the piston. Un- screws the bolt that holds the leather washers. Reverse the washers by turning them over. Change the washers on the piston and insert in the pump cylinder. A pump of this sort will serve to do a lot of simple vacuum experiments
The difference between hard and soft water Collect some hard water from a stream(or make some as defined in the next experiment). Also secure some soft water like as rain wate
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Explain the Process of Filtration - Formation of Urine The kidneys form urine in three phases: simple filtration, selective re-absorption and secretion. Let us begin with the p
Laboratory Safety Codes: BIS has prepared the following three codes (in the form of small books) regarding laboratory safety: i) Code of safety in microbiological laboratories
What is the rock cycle explain breifly? The rock cycle is the full "life" of a rock from its original formation to its demise through weathering, and rebirth through recrystall
A model illustrating how an eclipse appears The sun is shown by an opal electric bulb shining by a circular hole 5 cm in diameter in a piece of blackened cardboard. The corona
Explain Bile - External Defence Mechanism It is an alkaline secretion of the liver, which checks the growth of foreign bacteria on the partially digested food.
Nuclear Reactor: Nuclear fission can be maintaned as a controlled cjiain reaction in a nuclear reactor to produce energy. Fermi had found from experiment that slower moving
three adaptations that help humans have differential survivability, and three adaptations that help humans have differential fecundity
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