World History Archive July 2013
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James Prescott Joule's (1818-89) apparatus for determining mechanical equivalent of heat. Vessel of water, oil or mercury contains vanes attached to spindle. Cord attached to drums wound round spindle. Weight descending against scale rotates vanes. Raising and lowering weights raises temperature of fluid. From rise in temperature and distance travelled energy used can be calculated. Engraving 1881.
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World History Archive July 2013
2013-07-09
World History Archive/East News
Image Asset Management
0460001834
1,53MB
51cm x 31cm by 300dpi
1881, AGAINST, AND, APPARATUS, ATTACHED, BE, CALCULATED, CAN, CONTAINS, CORD, DESCENDING, DETERMINING, DISTANCE, DRUMS, ENERGY, ENGLLISH, ENGRAVING, EQUIVALENT, FLUID, FOR, FROM, HEAT, IN, JAMES, JOULE, LOWERING, MECHANICAL, MERCURY, OF, OIL, OR, PHYSICS, PRESCOTT, RAISES, RAISING, RISE, ROTATES, ROUND, SCALE, SCIENCE, SPINDLE, TEMPERATURE, THERMODYNAMICS, TO, TRAVELLED, USED, VANES, VESSEL, WATER, WEIGHT, WEIGHTS, WOUND,