. The Family tutor . ntly, ifthere were powder in the pan, it could not beexploded. The production of sparks by the ^S- ^l-flint and steel is due to small portions of the latter whichare struck olf by the percussion burning in the air,when the air is removed that combustioncan of course no longer take place. ()By taking advantage of the expansi-bility of the air, we are able to prove thatit is included in the pores of many , if an egg is dropped into a deep jar of water, and this coveredwith a receiver, as soon as exhaustion is made, a multitude of airbubbles continually asce
. The Family tutor . ntly, ifthere were powder in the pan, it could not beexploded. The production of sparks by the ^S- ^l-flint and steel is due to small portions of the latter whichare struck olf by the percussion burning in the air,when the air is removed that combustioncan of course no longer take place. ()By taking advantage of the expansi-bility of the air, we are able to prove thatit is included in the pores of many , if an egg is dropped into a deep jar of water, and this coveredwith a receiver, as soon as exhaustion is made, a multitude of airbubbles continually ascend through the water. (Fig. 41.) Or if a glassof porter be placed beneath such a receiver, its surface is covered witha foam, the carbonic acid gas, which is the cause of its agreeable brisk-ness, escaping away. (Fig. 42.) And even common river or springwater treated in the same manner exhibits the escape of a considerable quantity ofgas, which ascends through it in small bubbles, and gives it a sparkling
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Keywords: ., bookcentury1800, bookdecade1850, bookpublisherlondo, bookyear1851
