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Joule-Kelvin

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Joule-Kelvin
Joule-Kelvin (dʒuːl ˈkɛlvɪn) [See next.] = next.1909 Cent. Dict. Suppl. s.v. Effect, Joule-Kelvin effect. 1916 I. B. Hart Student's Heat xvi. 320 The liquefaction of hydrogen is achieved as a result of the fact that at 200 atmospheres and a temperature of -200° C. the Joule-Kelvin effect changes fro... Oxford English Dictionary
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James Prescott Joule
He worked with Lord Kelvin to develop an absolute thermodynamic temperature scale, which came to be called the Kelvin scale. as 4.1868 joules per calorie of work to raise the temperature of one gram of water by one Kelvin. wikipedia.org
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Joule–Thomson effect
In thermodynamics, the Joule–Thomson effect (also known as the Joule–Kelvin effect or Kelvin–Joule effect) describes the temperature change of a real gas ) is the Joule–Thomson (Kelvin) coefficient . wikipedia.org
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volumetric heat capacity definition
The SI unit of volumetrical heatcapacity is joule per kelvin per cubic meter, J⋅K−1 ⋅m−3.
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Dulong–Petit law
per kelvin per kilogram) is equal to 3R/M, where R is the gas constant (measured in joule per kelvin per mole) and M is the molar mass (measured in kilogram Therefore, using uppercase C for the full heat capacity (in joule per kelvin), we have: or . wikipedia.org
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Why can't we remove the sqrt from rms? In chemistry, we define the root-mean-square speed as $\sqrt{\bar{u^2}}$ = $\sqrt{\frac{3\text{RT}}{\text{M}}}$ A student asked me why we can't just remove the square root symb...
$T$ has units of Kelvin (K). The gas constant $R$ has units of Joule/mole/K. The molecular mass $M$ has units of kg/mole. Also remember that a Joule is $\mathrm{kg.m^2/s^2}$.
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Nat (unit)
The International System of Units, by assigning the same unit (joule per kelvin) both to heat capacity and to thermodynamic entropy implicitly treats information wikipedia.org
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Joule-Thomson effect - Wikipedia
Joule-Thomson effect. In thermodynamics, the Joule-Thomson effect (also known as the Joule-Kelvin effect or Kelvin-Joule effect) describes the temperature change of a real gas or liquid (as differentiated from an ideal gas) when it is forced through a valve or porous plug while keeping it insulated so that no heat is exchanged with the ...
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Dissipation
resistance, fluid flow through a flow resistance, diffusion (mixing), chemical reactions, and electric current flow through an electrical resistance (Joule The processes that Lord Kelvin identified were friction, diffusion, conduction of heat and the absorption of light. wikipedia.org
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詹姆斯·普雷斯科特·焦耳
此外在1847年英国协会于牛津的会议上，焦耳也做了一个报告，当时的听众中有乔治·斯托克斯、迈克尔·法拉第，以及当时已经被格拉斯哥大学聘为教授的年轻新人威廉·汤姆森（也就是后来的开尔文男爵，Lord Kelvin）。 University of Manchester material on Joule – includes photographs of Joule's house and gravesite - obituary with brief comment on Joule's family Joule wikipedia.org
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William Hopkins
Among his more famous pupils were Lord Kelvin, James Clerk Maxwell and Isaac Todhunter. With the support of a grant from the Royal Society, he invoked the assistance of Thomson, James Prescott Joule and William Fairbairn to make measurements wikipedia.org
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Noise spectral density
It has dimension of power over frequency, whose SI unit is watt per hertz (equivalent to watt-second or joule). For thermal noise, its spectral density is given by N0 = kT, where k is the Boltzmann constant in joules per kelvin, and T is the receiver system noise wikipedia.org
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Thermoelectric effect
The Thomson effect is an extension of the Peltier–Seebeck model and is credited to Lord Kelvin. This Thomson effect was predicted and later observed in 1851 by Lord Kelvin (William Thomson). wikipedia.org
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Inversion temperature
This temperature change is known as the Joule–Thomson effect, and is exploited in the liquefaction of gases. van der Waals gas we can calculate the enthalpy using statistical mechanics as where is the number of molecules, is volume, is temperature (in the Kelvin wikipedia.org
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19th century in science
In 1849, Joule published results from his series of experiments (including the paddlewheel experiment) which show that heat is a form of energy, a fact In 1852, Joule and Thomson demonstrated that a rapidly expanding gas cools, later named the Joule–Thomson effect or Joule–Kelvin effect. wikipedia.org
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