To determine co-efficient of expansion of a gas at constant pressure.
A glass U-tube with a bulb and stopcock at one end, the other limb being open.
An outlet tube from the bottom of the U tube passes through a rubber bung and has a stopcock at the end.
The stem below the bulb is graduated 3 x 0.1 ml. An inlet tube with a mohr clip also passes through the bung.
A glass water jacket encloses the U tube.
All glass parts made of borosilicate glass requires only 20 ml mercury, which is not included.
Copper calorimeter of 75 x 50 mm resting on felt pad inside wooden polished box provided with a brass nickel plated thermometer holder and copper stirrer.
Nickel plated copper calorimeter of 50 x 75 mm lagged and enclosed in an outer vessel of 75 x 100 mm size, with cover having terminals, a heating coil suitable for 3 – 6 V supply and holes for thermometer and stirrer.
With stirrer but without thermometer.
Apparatus is fitted on heavy channel base, at one end of which is an adjusting screw, at the opposite end is a micrometer screw reading to 0.01 mm for measuring the expansion.
Supplied with one each of aluminium, brass and iron expansion rods but WITHOUT thermometer.
Consisting of metal rod 500 mm in length and 4.5 mm dia.
enclosed in a well - lagged, metal 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.
To determine the co-efficient of absolute expansion of mercury.
Glass tubes with vertical limbs contained within glass jackets approx.
460 x 25 mm height x diameter are closed by bungs and fitted with inlet and outlet tubes.
Upper ends of these vertical limbs are angled on emergence from the jackets to produce two short, adjacent limbs placed against a silvered glass scale 0 to 12 cm x 1 mm.
Mounted on stand 610 x 230 mm, height x width.
Overall height 750 mm approx.
supplied without mercury.
To illustrate expansion of metal on heating and contraction on cooling, with steel bar of length 100 x 10 mm and plated brass gauge with a cutout to just accommodate the bar and two holes through which the bar passes when cold.
Two cast metal uprights, height 18 cm, fitted with two nickel plated rods supporting expansion bar of length 38 cm.
Expansion bar is fixed to one upright and moves a pointer on the other, when heated With scale reading 0 to 90°, supplied with one each, aluminium, brass and iron expansion bars.
Comprising two castmetal uprights linked by a pair of parallel plated metal support rods and supporting an expansion bar at the top. Supplied with expansion bars.
Comprising two cast-iron uprights, height 18 cm linked by two nickel plated rods supporting on expansion bar, length 38 cm fixed to one upright and resting on a friction pointer placed at the other.
Supplied with scale reading 0 to 90 deg and one each of aluminium, brass and iron expansion bars.
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