It is known that the paint brush can be long if every time you are finished, wash it thoroughly in solvent and warm water with soap or washing powder. But if it then still be a comb-toothed comb, brush will be like new.
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TEST QUARTZ
allows you to quickly verify the health of the quartz resonators. Diagram of the device consists of a generator (T1), detector (D1, D2) and DC amplifier (T2). By connecting the quartz to...
PIONEER TILLERS
Which exhibit the most interesting? Obviously, the one with the most visitors, which often induce camera lenses. This exhibit at the Moscow city exhibition scientifically-technical...
