1911 Encyclopædia Britannica/Pneumatics

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Pneumatic Gun

1911 Encyclopædia Britannica, Volume 21

Pneumatics

Pneumatolysis

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20226091911 Encyclopædia Britannica, Volume 21 — Pneumatics

PNEUMATICS (Gr. πνεῦμα, wind, air), the branch of physical science concerned with the properties of gases and vapours (see Gas). A pneumatic trough is simply a basin containing water or some other liquid used for collecting gases.