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Ontology
Overview
/
Open Energy Ontology
/ Class - air
Label: air
Definition:
Air is a gas mixture that forms the Earth's atmosphere.
Sub classes:
compressed air
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Definition:
Compressed air is air that has been compressed to store energy. To discharge energy, the air is expanded.
liquid air
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Definition:
Liquid air is air that has a liquid state of matter.
Back to the super classes:
gas mixture
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Definition:
A gas mixture is a portion of matter that is a composition of different kinds of portions of matter and that has a gaseous normal state of matter.