vacuum column
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Vacuum distillation — At atmospheric pressure, dimethyl sulfoxide boils at 189°C. Under a vacuum, it distills off into the connected receiver at only 70°C. Vacuum distillation is a method of distillation whereby the pressure above the liquid mixture to be distilled is … Wikipedia
Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… … Wikipedia
Vacuum pump — A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The vacuum pump was invented in 1650 by Otto von Guericke. Types Pumps can be broadly categorized according to three… … Wikipedia
vacuum technology — Introduction all processes and physical measurements carried out under conditions of below normal atmospheric pressure. A process or physical measurement is generally performed in a vacuum for one of the following reasons: (1) to remove the … Universalium
Column filter — A column filter is mainly used for the refining for the organic chelation compounds. The filter consists of the dropping funnel and the two 12 inch glass columns ( the main constituents for the filter system) the reservoir is a vacuum aided flask … Wikipedia
Torricellian vacuum — vacuum above the column of a barometer (named after the 17th century Italian physicist Evangelista Torricellian) … English contemporary dictionary
Fractionating column — A fractionating column or fractionation column is an essential item used in the distillation of liquid mixtures so as to separate the mixture into its component parts, or fractions, based on the differences in their volatilities. Fractionating… … Wikipedia
Torricellian vacuum — [ˌtɔ:rɪ tʃɛlɪən, sɛlɪən] noun a vacuum formed above the mercury column in a barometer when the tube is longer than the height of mercury sustainable by atmospheric pressure. Origin from the name of the 17th cent. Italian mathematician and… … English new terms dictionary
positive column — Physics. the luminous region between the Faraday dark space and the anode glow in a vacuum tube, occurring when the pressure is low. * * * … Universalium
positive column — noun : the region in an electric discharge that extends from the anode to the Faraday dark space * * * Physics. the luminous region between the Faraday dark space and the anode glow in a vacuum tube, occurring when the pressure is low … Useful english dictionary
Distillation — Distiller and Distillery redirect here. For other uses, see Distiller (disambiguation) and Distillery (disambiguation). For other uses, see Distillation (disambiguation). Laboratory display of distillation: 1: A heating device 2: Still pot 3:… … Wikipedia
