ROTARY PUMP

THIS IS FOR BEST PUMP WHICH HAS BEEN INVESTED FOR PHODUCING BACCUM IT IS WHICH IN ACTION AND CAN EXHAUST LATGE BOLUMES IN A SMALL TIME IT IS OPERATED BY MEAND OF AN ELECTRIC MOTOR AND DOES NOT REQUIRE MUCH ATTENTION IT IS WIDELY USED FOR PRODUCING VAMUUM...

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VARIABLE IMMERSION TYPE HYDROMETERS

such a hydrometer sinks to different marks in diff rent liquid ans always displace of a hollow cylindrical glass tube G its one and carries on small bulb B while the after ens carries on elongated glass stem s in order that hydrometer may float on in...

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SUBMARINE

SUBMARINES- sea vessels which can float and move either on the surface of the sea is underneath the watter as may be necessary A submarine has tanks called ballast tank in the front the middle and the rear part when these tanks are filled with sea water...

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ANEROID BAROMETER

An aneroid baromerer is a barometer in which no liquid used it confisls of a boxof thin carrugated metal from which most of air has been extracted when the air pressure increase the sides are presed closer together and where the pressure secreases the...

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EXHAUST PUM

such a pump was invested by von G verick in Germany during 1650. he uded it for producing vacuum and demonstrating the effects of atmospheres presses as which the magdevurg is gemispheres the pump consist of a metalic cylindrical barrel in which a piston...

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