HEAT
::
61
Bar breaking apparatus
For demonstration of the effects of expansion and con-
traction. Supplied with 10 cast-iron rods, which by hea-
ting or cooling of the app. centre rod can be broken due
to the centre rod’s expansion or contraction.
Overall length: 320 mm.
2660.20 Bar breaking apparatus
2660.20
2665.00
2670.00
Ring and ball
For demonstration of heat expansion of solid bodies.
Bimetalic strips Consists of a brass ring and ball mounted in wooden
The strips are supplied with an indentation for mounting
handle.
under af fastening screw. Size: 0.5 x 10 x 150 mm. 2665.00 Ring and ball
Mass: 6 grams.
2670.00 Bimetalic strips
2690.00
Material samples
The set consists of eight rods. It is used e.g. for demon-
stration of the various heat conductivities of these mate-
rials. They can also be used for experiments with densi-
ty. All the rods have the same (2 cm
3
) volume. They are
made of aluminum, lead, nylon, glass, rubber, iron,
copper and brass. Supplied in a plastic box with clear lid.
The rods are 120 mm long. Mass: 130 g.
2690.00 Material samples
Conductometer
The different rates at which heat flows in various metals
are shown by this device. Four rods of different metals
(brass, copper, aluminium and iron) have one end clam-
ped in an iron ring mounted on a rod with wooden hand-
le. The four rods have hollow ends where a match can be
2690.10
inserted, and sulphur placed in the central hole. When
heated, the matches will “light” in order of thermal con-
ductivity of each rod.
2690.10 Conductometer
®
Science Equipment for Education Physics
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