Shewing the elastic force of aqueous vapour in millimètres of mercury at the latitude of Paris (48° 50') for each degree centigrade from −32°C to +230°C.
ABSOLUTE zero of temperature, page 321, 368.
Absorbed heat, 2; energy of, 298. Absorption of heat, 175; selective, 176; and radiation of rock salt small, 191; chapter on, 222- 232. Actinometer, Herschel's, 361. Actinometric observations, 359. Affinity, chemical, effects of on va- porization, 97; how affected by temperature, 156.
African desert, rapid refrigeration in, 230.
Air, temperature and pressure of, 56; temperature and volume of, 59; specific gravity of, 144; weighing in, 145; energy of, in motion, 357.
Air pump to steam engine, invented
Air thermometer, 61; best instrument
for measuring temperature, 368. Alcarazas, 102.
Alcohol thermometer, 19. Alloys, 85.
American experiments on pressure of
aqueous vapour, 123. Andrews, Dr., observation on lique- faction of gases, 117; table of latent heat of vapours, 285; ex- periments on heat of combustion, 340; tables of, 342: experiments on metallic precipitates, 343. Annealing, 39.
Apjohn's formula for hygrometry, 143.
Apparatus for freezing, 101. Aqueous vapour, pressure of, 122; correction for latitude, 129; im-
portance of to our globe, 230; tables of, 369.
Arago and Dulong's experiments on pressure of aqueous vapour, 123. Areometric method of measuring dilatation, 40.
Artificial formation of ice, 232. Asia, rapid refrigeration in Central, 230.
Athermanous, 175; envelope to globe, 228.
Atmosphere, relation to radiant heat,
230. Atomic Heat, 276. Aurora borealis, 358.
Avagadro on tension of vapour of mercury, 131.
Baker, Sir R., observations on ice in Bengal, 232.
Balance, compensation, 76. Bar, yard measure, 65; destroyed at fire at House of Commons, 66; flow of heat along, 244. Barometric column, reduction of, 77. Baudrimont's researches on influence of temperature on metallic wire, 157.
Becquerel on electric conductivity, 155; on phosphorescence, 233. Bennet's experiment on sun's heat, 161, 352.
Berard on polarization, 177. Bessel on vapour, 105.
Bird, maker of the English parlia- mentary standard yard, 65, 66; of the standard weight, 69. Black, Dr., discovered latent heat, 84; invented method for measur- ing specific heat, 266; measure-
« PreviousContinue » |