perfect gas
- noun
- /ˈpɜrfɪkt ɡæs/
- Specialized
:
gas perfecto
- In physics, a perfect gas is often used as a model to explain the behavior of gases under different conditions.
And we found that air is a perfect gas, P equals rho RT.
- And we found that air is a perfect gas, P equals rho RT.
Examples
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And we found that air is a perfect gas, P equals rho RT.
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If you look at the perfect gas law, you can find that warm air at the same pressure is less dense.
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If the material in the interior behaved like a perfect gas in adiabatic hydrostatic equilibrium, the quantity
Academic text (1995) -
According to the principles of thermodynamics, a perfect gas has molecules that do not attract or repel each other.
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The behavior of a perfect gas can be described using the ideal gas law, which relates pressure, volume, and temperature.
Synonyms
1
4.4
An imaginary gas made of tiny particles that take up no space and do not affect each other
Surface Forms
Morphology
The noun phrase is compositionally transparent: 'perfect' modifies 'gas' to mean a gas that is ideal or without imperfections, so a learner who knows both words can infer it refers to an idealized/‘perfect’ kind of gas. Technical details about intermolecular forces or molecule size are domain-specific, but the core sense (an ideal/perfect gas) is directly derivable from the constituents.
Etymology
Perfect gas comes from a simple picture: imagine many tiny balls, a gas, that do not touch or pull on each other and move freely. So, the word perfect means a simple 'model' of a gas that follows the gas laws exactly.