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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i44
SOAP-BUBBLES, AND
found to answer so well. They used less
glycerine than Plateau. It is best made as
follows. Fill a clean stoppered bottle three-
quarters full of water. Add one-fortieth part of
its weight of oleate of soda, which will probably
float on the water. Leave it for a day, when
the oleate of soda will be dissolved. Nearly
fill up the bottle with Price’s glycerine and
shake well, or pour it into another clean bottle
and back again several times. Leave the
bottle, stoppered of course, for about a week
in a dark place. Then with a syphon, that is,
a bent glass tube which will reach to the
bottom inside and still further outside, draw off
the clear liquid from the scum which will have
collected at the top. Add one or two drops
of strong liquid ammonia to every pint of the
liquid. Then carefully keep it in a stoppered
bottle in a dark place. Do not get out this
stock bottle every time a bubble is to be blown,
but have a small working bottle. Never put
any back into the stock. In making the liquid
do not warm or filter it. Either will spoil it.
Never leave the stoppers out of the bottles or
allow the liquid to be exposed to the air more
than is necessary. This liquid is still perfectly