O QUE SIGNIFICA EFFUSIOMETER EM INGLÊS
Lei de Graham
A lei de Graham ", conhecida como lei de derrame de Graham, foi formulada pelo químico físico escocês Thomas Graham em 1848. Graham descobriu experimentalmente que a taxa de efusão de um gás é inversamente proporcional à raiz quadrada da massa de suas partículas. Esta fórmula pode ser escrita como: onde: Taxa1 é a taxa de efusão do primeiro gás. Rate2 é a taxa de efusão para o segundo gás. M1 é a massa molar de gás 1 M2 é a massa molar de gás 2. p1 é a pressão do gás 1. p2 é a pressão do gás 2. A lei de Graham afirma que a taxa de efusão de um gás é inversamente proporcional ao quadrado raiz do seu peso molecular. Assim, se o peso molecular de um gás for quatro vezes maior que o outro, ele difundiria através de um bujão poroso ou escaparia através de um pequeno orifício num vaso a metade da taxa do outro. Uma explicação teórica completa da lei de Graham foi fornecida anos mais tarde pela teoria cinética dos gases. A lei de Graham fornece uma base para separar os isótopos por difusão - um método que veio a desempenhar um papel crucial no desenvolvimento da bomba atômica.
definição de effusiometer no dicionário inglês
A definição de efusiómetro no dicionário é um aparelho para determinar taxas de efusão de gases, geralmente usado para medir pesos moleculares.
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10 LIVROS EM INGLÊS RELACIONADOS COM «EFFUSIOMETER»
Descubra o uso de
effusiometer na seguinte seleção bibliográfica. Livros relacionados com
effusiometer e pequenos extratos deles para contextualizar o seu uso na literatura.
1
The Physics of Metrology: All about Instruments: From ...
The effusiometer derives the density of gases from the time a predetermined
volume of gas takes to escape through a small opening or nozzle. An apparatus (
Fig. 9.1) built to this principle consists of a cylindrical container with a calibrated ...
2
Physical laboratory experiments for engineering students
EXPERIMENT 12 Specific Gravity of Gases with Effusiometer Object. To
determine the specific gravity of illuminating gas by means of the effusiometer.
Also, to determine the rate of gas consumption for a fish-tail burner and for a
Bunsen ...
Samuel Sheldon, Erich Hausmann,
1917
3
Science Vocabulary Builder
An effusiometer, a term seldom used, measures the effusion of a gas, its escape
through tiny holes, into a vacuum. To the question: 'A glass jar with a tiny hole in
the top and a large one where it is immersed in water at the bottom, which is ...
4
Process Technology International
(2) where y = relative density of gas (air = 1) M = molecular weight of gas G = time
of gas effluence from effusiometer(s) A = time of air effluence from effusiometer(s)
The measurements have to be performed on an effusiometer. In this widely ...
One effusiometer designed by Nash5 employs orifices about 0.015 mm in
diameter made in a thin (0.01-mm) glass membrane by a spark discharge. Very
low working pressures are used, satisfying one of the basic conditions of
Graham's law, ...
6
Natural gasoline: testing, manufacturing and properties
Table 3— COMPARATIVE RESULTS OF SPECIFIC GRAVITY TESTS OF
NATURAL GAS BY EFFUSIOMETER AND FLOWMETER— POSITIVE METER
METHOD This flowmeter-positive meter device for determining specific gravity of
gas ...
George G. Oberfell, R. C. Alden,
1924
7
English vocabulary builder
EFFUSIOMETER (ef-fu-si-om'-e-ter) n. An instrument used to measure relative
rates of diffusion of gases, a glass jar with a tiny hole in the top and a large one
immersed in water at the bottom. The two instruments effusiometer and
hygrometer ...
Johnson O'Connor, Human Engineering Laboratory (U.S.),
1948
8
Tests of Instruments for the Determination, Indication, Or ...
... gas as sampled, including the water vapor contained in it. In the "Effusiometer"
and the Ranarex instruments the gas is saturated or nearly saturated with water
vapor before testin and its specific gravit subsequently computed to a dry basis.
Francis Albert Smith, John Hartshorn Eiseman, E. Carroll Creitz,
1947
An apparatus, the Effusiometer, was devised in 1858 by BUNSEN to measure the
rates of effusion of gases, and in this way to compare their molecular weights.
The apparatus consists of a tube inverted in a trough of mercury and closed at the
...
10
Hazardous Chemicals Handbook
... treatment/recovery plant Calculation from published data Calorimeters
Chemical analysis (q.v.) Chromatography Chancel flask, or effusiometer
Tabulated Hygrometer ASTM method Tabulated see Calorific value and
Flammable limits ASTM ...