Drum and handle used to turn a paddlewheel by James Joule

Drum and handle used to turn a paddlewheel by James Joule, c1850

Details

Category:
Scientific Instruments & Research
Object Number:
Y1969.5.62
Measurements:
overall: 460 mm, 43 mm,
type:
special laboratory equipment
credit:
Gift of University of Manchester Institute of Science & Technology

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Condensing pump used by Joule with a gas cylinder for experiments on the condensation of air in 1844. Joule described it thus: 'consisting of a cylinder of gun metal and of a piston fitted with a plug of oiled leather, which works easily, yet tightly, through a stroke of 8 inches. The cylinder is 10 1/2 inches long, 1 3/8 inch in interior diameter'

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Lid and discs used by James Joule in friction experiments on solids, c. 1850. Circular lid with three arms on one side through which rods securing perforated discs are slotted. One disc is moveable by a rod; the lower disc is fixed. Used in a paddlewheel experiment to test the change in temperature brought about by the friction of solid bodies. Probably exhibited at Royal Jubilee Exhibition, Manchester, 1887

Lid and discs used by James Joule in friction experiments on solids