The method of obtaining the vacuum
People usually can exhaust gases from a sealed container or container so that the number of gas molecules in the dwindling device called vacuum equipment or a vacuum pump. Currently in vacuum technology, using different methods, and have been able to obtain measurements from atmospheric pressure to 105Pa 10-13Pa, 18 orders of magnitude wide pressure range. Clearly, only one vacuum pump, to obtain such a wide low-pressure space of the gaseous state, it is very difficult.Liquid ring vacuum pump.
Access to technology in a vacuum, the vacuum technology currently used to obtain two ways, one is through this mechanism the motion of a gas discharge directly from a sealed container; the other is through the physical and chemical methods such as gas molecules adsorbed or condensation on cold surfaces. Both methods use a variety of vacuum pumps manufactured more types of classification methods vary, but the most common method is to be classified according to the principle or the structural characteristics of the pump.
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