Polished Copper, 75 x 50 mm. diameter resting on felt pad inside
an outer vessel, 100 x 75 mm. diameter. Outer vessel fitted with
detachable clip type thermometer support. Complete with stirrer.
CALORIMETER, JOULE'S
For determination of the specific heat capacity of as liquid by the
electrical method. Comprises a nickel-plated copper calorimeter
75 x 50 mm. lagged and enclosed within an outer vessel 100 x 75
mm. A close-fitting ebonite lid is provided with a wire stirrer, and a
pair of 4 mm. socket terminals connected to a constantan wire
heating coil. The resistance of the coil is approximately 6 ohms
and should be used with a current of 0.5A with a maximum of 1A.
Supplied without thermometer.
RING AND BALL GRAVESANDE
An apparatus for demonstrating thermal expansion, comprising a
captive brass ball secured to a mounted brass ring by a chain.
Ring mounted on rod with a wooden handle. The ball passes
through the ring when cold but will not pass through after being
heated. Ball dia. 22 mm.
BAR AND GAUGE
For illustrating expansion by heating and contraction by cooling.
Comprising a mild steel bar 110 x 10 mm. length x diameter, on rod
with wood handle, overall length approx. 280 mm. with metal cast
gauge, sliding fit over ends of bar and with hole 10 mm. bore in one
Arm.
LINEAR EXPANSION APPARATUS
Consisting of a metal rod, 500 mm. in length and 4.5 mm. Dia.,
enclosed in a well -lagged, nickel-plated brass tube with three
tubules for steam inlet, outlet and thermometer. The metal rod to
be investigated is supported in the steam jacket by detachable
rubber bungs situated at each end of the tube. The apparatus is
carried on a heavy gauge channel base, at one end of which is an
adjusting screw. At the opposite end is a micrometer screw
reading to 0.01mm. for measuring the expansion. Supplied
complete with copper, brass and iron rods but without
Thermometer.
PYROMETER ALCOHOL EISCO
To demonstrate linear expansion by heating, comprising of an
arrangement mounted upon a metal sheet base with large scale
for easy view of expansion. Supplied with three rods of brass,
iron & aluminium.
