. Inductive elementary physical science with inexpensive apparatus, and without laboratory equipment . of the breath is only about an ounce. With a properlj-constructed apparatus, however, a man can, with his breath,lift an ox. Compare this principle with that of the water-press, Exp. 30. 86 INDVCTIVE PHYSICS. Aux. 16. Place a large sponge iu a plate half filledwith water. Note what takes place. With a few dropsof ink or bluing, color a little water in a shallow dish, andstand a lump of sugar in it. Note the effect. Stand apiece of cane, rattan, or blackboard crayon, in a little tur-pentine or
. Inductive elementary physical science with inexpensive apparatus, and without laboratory equipment . of the breath is only about an ounce. With a properlj-constructed apparatus, however, a man can, with his breath,lift an ox. Compare this principle with that of the water-press, Exp. 30. 86 INDVCTIVE PHYSICS. Aux. 16. Place a large sponge iu a plate half filledwith water. Note what takes place. With a few dropsof ink or bluing, color a little water in a shallow dish, andstand a lump of sugar in it. Note the effect. Stand apiece of cane, rattan, or blackboard crayon, in a little tur-pentine or kerosene oil, and after an hour or two, accord-ing to the length of the piece used, hold a lighted matchto the upper end. Inference. Explain the use of blotting-paper, candle-and lamp-wicks; and mention any other similar cases youcan think of. E> 0 >^ -^ Aux. 17. The diagrams above represent a simple formof the air-pump, used to suck or exhaust a part of theair from a bottle. C is a cylinder in which works thepiston P, V, V, are valves, or little doors, opening oneway only. Inferences. 1. E
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectphysics, bookyear1897
