Psychrometrics (or psychrometry, from Greek ψυχρόν (psuchron) 'cold' and μέτρον (metron) 'means of measurement'; also called hygrometry) is the field of engineering concerned with the physical and thermodynamic properties of gas-vapor mixtures. == History == With the inventions of the hygrometer and thermometer, the theories of combining the two began to emerge during the sixteenth and seventeenth centuries.
Psychrometrics (or psychrometry, from Greek ψυχρόν (psuchron) 'cold' and μέτρον (metron) 'means of measurement'; also called hygrometry) is the field of engineering concerned with the physical and thermodynamic properties of gas-vapor mixtures. == History == With the inventions of the hygrometer and thermometer, the theories of combining the two began to emerge during the sixteenth and seventeenth centuries.
Source: Wikipedia "Psychrometrics" · CC BY-SA 4.0
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