Aero formulas: Difference between revisions
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(surface tension, viscosity) |
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!Meaning | !Meaning | ||
!Unit (SI) | !Unit (SI) | ||
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| γ (gamma) | |||
| [https://en.wikipedia.org/wiki/Surface_tension Surface tension] | |||
| N.m<sup>-1</sup> (Newton per meter) | |||
|- | |||
| μ (mu) or η (eta) | |||
| [https://en.wikipedia.org/wiki/Viscosity Viscosity] | |||
| Pa·s (Pascal second) or P (Poise, 1 Poise is 0.1 Pa.s) | |||
|- | |- | ||
| H | | H | ||
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| style="background:white; color:black"| {{SERVER}}/images/formulas_mirror/heat_vap.png or L | | style="background:white; color:black"| {{SERVER}}/images/formulas_mirror/heat_vap.png or L | ||
| [https://en.wikipedia.org/wiki/Vaporization_heat Vaporization heat] or [https://en.wikipedia.org/wiki/Latent_heat Latent heat of vaporization]: energy required to vaporize a mole of liquid at a given temperature. | | [https://en.wikipedia.org/wiki/Vaporization_heat Vaporization heat] or [https://en.wikipedia.org/wiki/Latent_heat Latent heat of vaporization]: energy required to vaporize a mole of liquid at a given temperature. | ||
| J.mol<sup>-1</sup> | | J.mol<sup>-1</sup> (Joule per mole) | ||
|- | |- | ||
| T | | T | ||
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|- | |- | ||
|style="background:white"| {{SERVER}}/images/formulas_mirror/clausius-clapeyron.png | |style="background:white"| {{SERVER}}/images/formulas_mirror/clausius-clapeyron.png | ||
|[https://en.wikipedia.org/wiki/Clausius%E2%80%93Clapeyron_relation Clausius-Clapeyron relation] | |[https://en.wikipedia.org/wiki/Clausius%E2%80%93Clapeyron_relation#Ideal_gas_approximation_at_low_temperatures Clausius-Clapeyron relation] | ||
|Relation between the pressure, latent heat of vaporization and temperature of a vapour at two temperatures. | |Relation between the pressure, latent heat of vaporization and temperature of a vapour at two temperatures (approximation, at low temperatures). | ||
|} | |} | ||
Revision as of 02:54, 15 March 2012
The List of elementary physics formulae on wikipedia is useful.
List of variables
| Variable | Meaning | Unit (SI) |
|---|---|---|
| γ (gamma) | Surface tension | N.m-1 (Newton per meter) |
| μ (mu) or η (eta) | Viscosity | Pa·s (Pascal second) or P (Poise, 1 Poise is 0.1 Pa.s) |
| H | Enthalpy | J (Joule) |
 or L
|
Vaporization heat or Latent heat of vaporization: energy required to vaporize a mole of liquid at a given temperature. | J.mol-1 (Joule per mole) |
| T | Temperature | K (Kelvin) |
| V | Volume | m3 (cubic meter) |
| n | Quantity of matter | mol (mole) |
| p | Pressure | Pa (Pascal) |
List of constants
| Constant | Meaning | Value | Unit (SI) |
|---|---|---|---|
| NA or N | Avogadro constant, number of atoms or molecules in a mole. | 6.02214129.1023 | mol-1 |
| R | ideal gas constant | 8.3144621 | J.K−1.mol−1 |
| kB or k | Boltzmann constant, gas constant R divided by Avogadro number. | 1.3806488.10-23 | J.K-1 |
List of equations
| Equation | Name | Meaning |
|---|---|---|
|
Ideal gas equation | Relation between properties of an ideal gas (state equation). k is kB. |
|
Clausius-Clapeyron relation | Relation between the pressure, latent heat of vaporization and temperature of a vapour at two temperatures (approximation, at low temperatures). |
