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)
r valve will close, and the dilated air in the pump will be com-pressed and pass through the upper valve. By again raising the piston,the air in the receiver will be further expanded; and so on ; until theair is so intensely rarefied, that it will no longer open the valves, whenthe process must… … Fig. 28. tion ; the dead bird, that without iiir there can be wo flight or animal life;the coin and leather, that in avacuum, liglit and heavy bodies willfall, by force of gravity, tuith equalrapidity ; the inverted flask of water,tliat without the downward pressureof the air on liquids, the…
Physics · Astronomy
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