Scientific amusements . lS- 54-—Soap-bubble lifting a Paper Aeronaut. Let a small, thin paper-figure be cut out, and fastenedby a thread to a disc of paper ; it can be made to adhere-to the bubble, as shown in Fig. 54. If the bubble thenbe released, it will carry the figure up with it (Fig. 55).If smaller tubes be used, bubbles of smaller size will beproduced. The paper tubes must be replaced by otherswhen wet and soddened, but glass tubes are preferable. AERONAUTICS. 65 By inflating soap-bubbles with hydrogen gas we can. ^io- 55-—Soap-bubble iuJiated with warm Air. Mode of fixing an Aeronaut.
Scientific amusements . lS- 54-—Soap-bubble lifting a Paper Aeronaut. Let a small, thin paper-figure be cut out, and fastenedby a thread to a disc of paper ; it can be made to adhere-to the bubble, as shown in Fig. 54. If the bubble thenbe released, it will carry the figure up with it (Fig. 55).If smaller tubes be used, bubbles of smaller size will beproduced. The paper tubes must be replaced by otherswhen wet and soddened, but glass tubes are preferable. AERONAUTICS. 65 By inflating soap-bubbles with hydrogen gas we can. ^io- 55-—Soap-bubble iuJiated with warm Air. Mode of fixing an Aeronaut. represent the ascents of gas balloons, which differ fromwarm air balloons.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
