60
::
HEAT
Gasoline cannon
This demo illustrates the explosive power of hydrocarbons.
The apparatus consists of a plexiglas tube in which a pie-
zoelectric spark generator is mounted in a rubber stopper in
the bottom. The inner side of the tube is moistened with a
small amount of gasoline, and the cork stopper at the top is
put in place. When the spark generator is activated the
2648.00
explosive mixture of gasoline fumes and air is ignited, and
the cork stopper is fired from the top of the tube. Size: 710
mm x 52 mm diameter. Mass: 480 g.
2648.00
Gasoline
cannon
2649.00
Pneumatic lighter
For demonstrating temperature increase when a confined gas is compressed. If
an inflammable material is placed in the transparent cylinder, it will ignite when
the piston is pressed to compress the gas. The lighter consists of the cylinder
with piston. Included are a bottom plate with cylinder, O-ring lubricant, extra O-
rings and inflammable material. Supplied with user instructions.
2649.00 Pneumatic lighter
Thermal expansion apparatus
For demonstration of the linear expansion of solids. Two
metal rods are placed over a container which is filled
with spirit and then set alight to heat up the rods. The
linear expan sion is measured by means of two mounted
pointers bearing against the ends of the rods. The poin-
ters can be set at zero by rotating the rods, which are
threaded at one end. The metal rods are made of iron
and copper. Total length excl. pointers: 220 mm.
2655.00 Thermal expansion apparatus
Thermal expansion apparatus
2655.00
Precision dial-indicator form. By using a dial indicator to
measure the changing length, this apparatus provides
very accurate determinations of the coefficient of linear
expansion. The indicator reads directly 0.01 mm.
The heating takes place by passing water vapour
through the glass jacket. The unit is supplied with 4 rods,
one of copper, aluminium, glass and iron. Overall length
2655.10
of the apparatus 650 mm.
2655.10 Thermal expansion apparatus
®
Science Equipment for Education Physics
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