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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64
SOAP-BUBBLES, AND
way you look at it, and to the same extent.
The curvature inwards would make the pres-
sure inside less, and the curvature outwards
would make it more, and as they are equal
they just balance, and there is no pressure at
all. If we could in the same way examine the
Fig- 27.
bubble with the waist, we should find that this
was true not only at the waist but at every part
of it. Any curved surface like this which at
every point is equally curved opposite ways,
is called a surface of no curvature, and so what
seemed an absurdity is now explained. Now
this surface, which is the only one of the kind