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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THE FORCES WHICH MOULD THEM.
77
We have found that the pressure in a short
cylinder gets less if it begins to develop a
waist, and greater if it begins to bulge. Let us
therefore try and balance one with a bulge
against another with a waist. Immediately that
I open the tap and let the air pass, the one
Fig. 32.
with a bulge blows air round to the one with
a waist and they both become straight. In
Fig. 32 the direction of the movement of the
air and of the sides of the bubble is indi-
cated by arrows. Let us next try the same