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. 129
. in the mixture of alcohol and
can see that the inner bubble is
than air, because if I
break the outer one, the
inner one rises rapidly to
the ceiling.
Instead of blowing the
first bubble on a heavy
fixed ring, I shall now
blow one on a light ring,
made of very thin wire,
tains only air.
with coal-gas, then the
and rise, and will press
against the top of the
outer one with such force
as to make it carry up
the wire ring and a yard
of cotton, and some
paper to which the cotton
is tied (Fig. 62); and all
this time, though it is
which tends to rise, the two
really touching one another at all.
I have now blown an air-bubble
fixed ring, and pushed up inside it
water. You
really lighter
This
Fig. 60.
bubble con-
If I blow inside this a bubble
gas-bubble will try
Fig. 61.
the
inner one only
bubbles
are not
on the
a wire
i