Description
SP4-0505
A classic demonstration of the
fact that sounds requires as
medium to travel.
It consists of an electric bell
mounted in an acrylic jar.
The jar is open at lower end and
has a hole at the top, which
accepts a rubber stopper with
two holes.
The stopper is fitted with two
nickel plated brass rods, which
act as terminals and also
supports the bell within the jar.
Supplied complete with rubber
stopper, terminals and bell but
supplied without pump plate.
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