Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
If the piston be drawn up, the expansion of tbe air in the vessel, W,,will close the valve, T, and the air in the cylinder will pass throughthe valve in tlie piston. If the motion of the piston be reversed, theair below it will be compressed and driven through the valve, T, intothe condenser, while…
Physics · Astronomy
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