Soap Bubbles
and the Forces which Mould Them
Forfatter: F. R. S., A. R. S. M., C. V. Boys
År: 1890
Serie: Romance of Science Series
Sted: London
Sider: 178
UDK: 532
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54
SOAP-BUBBLES, AND
elastic nature of the film. Or again, I have
blown a bubble on the end of a wide pipe; on
holding the open end of the pipe to a candle
flame, the outrushing air blows out the flame
at once, which shows that the soap-bubble is
Fig. 21.
acting like an elastic bag (Fig. 21). You
now see that, owing to the elastic skin of a
soap-bubble, the air inside is under pressure
and will get out if it can. Which would you
think would squeeze the air inside it most, a
large or a small bubble? We will find out by