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absorption acid action amount of heat antimony aqueous vapour atmosphere atoms augmented ball basin beam bismuth body boiling boiling point Cahirciveen calorific carbon carbonic acid cause Celsius chilled cold colour combustion condensation cool copper cube cylinder deflection degrees diathermancy distance earth effect electric energy ether ethereal waves expansion experiment experimental fall feet flame flask force freezing friction galvanometer geyser glacier glass hydrogen Iceland inches iron Joule lamp lampblack latent heat lecture light liquid luminous mass mechanical melting mercury metal millims mirror molecular motion moves needle observe oxygen particles pass piece plate portion pound pressure produced quantity of heat radiant heat radiation raise rays rocker rocksalt screen sensible side smoked salt solid sound source of heat space spectrum substance sufficient surface temperature thermo-electric pile thermometer tion transmitted transparent tube velocity vessel vibrations warm weight wire
Page 70 - It is hardly necessary to add, that any thing which any insulated body, or system of bodies, can continue to furnish without limitation, cannot possibly be a material substance...
Page 25 - ACTUALLY BOILED ! It would be difficult to describe the surprise and astonishment expressed in the countenances of the bystanders, on seeing so large a quantity of cold water heated, and actually made to boil, without any fire.
Page 67 - Heat is a motion, expansive, restrained, and acting in its strife upon the smaller particles of bodies. But the expansion is thus modified: while it expands all ways, it has at the same time an inclination upwards. And the struggle in the particles is modified also: it is not sluggish, but hurried and with violence.
Page 110 - The immediate cause of the phenomena of heat then is motion, and the laws of its communication are precisely the same, as the laws of the communication of motion.
Page 70 - By meditating on the results of all these experiments we are naturally brought to that great question which has so often been the subject of speculation among philosophers, namely, What is heat — is there any such thing as an igneous fluid? Is there...
Page 111 - ... the particles move round their own axes, and separate from each other, penetrating in right lines through space. Temperature may be conceived to depend upon the velocities of the vibrations; increase of capacity on the motion being performed in greater space; and the diminution of temperature, during the conversion of solids into fluids or gases, may be explained on the idea of the loss of vibratory motion, in consequence of the revolution of particles round their axes, at the moment when the...
Page 111 - ... and elastic fluids, besides the vibratory motion, which must be conceived greatest in the last, the particles have a motion round their own axes with different velocities, the particles of elastic fluids moving with the greatest quickness ;. and that in ethereal substances the particles move round their own axes, and separate from each other, penetrating in right lines through space.
Page 111 - Since all matter may be made to fill a smaller space by cooling, it is evident that the particles of matter must haye space between them ; and since every body can communicate the power of expansion to a body of a lower temperature — that is, can give an expansive motion to its particles — it is a probable inference that its own particles are possessed of motion ; but as there is no change in the position of its parts, as long as its temperature is uniform, the motion, if it...
Page 67 - Being engaged lately in superintending the boring of cannon in the workshops of the military arsenal at Munich, I was struck with the very considerable degree of Heat which a brass gun acquires in a short time in being bored, and with the still more intense Heat (much greater than that of boiling water, as I found by experiment) of the metallic chips separated from it by the borer.