An Introduction to the Study of HeatRivingtons, 1880 - 136 σελίδες |
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30 inches absolute temperature absorbed atmosphere barometer bismuth body boiling point bottom brass bulb called calorimeter capacity for heat cause centigrade change of temperature co-efficient of expansion co-efficient of linear colder column condensed conductivity convection converted cooled cubic feet cubic inches density dew-point equal evaporation Fahrenheit filled fire fluid FRANCIS STORR freezing point gases heat of ice heat of iron heat required Hence hygrometer ice melted inches of mercury instrument lamp-black latent heat length linear expansion liquid lower mass measure melting point metal meter mixture number of degrees number of therms number of units perature placed platinum pound of ice pound of water pressure quantity of heat radiation raise the temperature Reaumur's required to raise rises Rugby School solid space specific gravity specific heat steam at 100 substance surface tempera thermal units thermometer ture units of heat vapour volume water boiling wire
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Σελίδα 94 - It is hardly necessary to add, that anything which any insulated body, or system of bodies, can continue to furnish without limitation, cannot possibly be a material substance ; and it appears to me to be extremely difficult, if not quite impossible, to form any distinct idea of anything capable of being excited and communicated in the manner the Heat was excited and communicated in these experiments, except it be MOTION.
Σελίδα 11 - ... to rest. Let the point at which it becomes stationary be marked; it is the freezing point of the thermometer. Let the instrument be now removed and thrust into boiling water ; the mercury expands, the column rises, and finally attains a stationary height. Let this point be marked ; it is the boiling point of the thermometer. The space between the freezing point and the boiling point has been divided by Reaumur into 80 equal parts, by Fahrenheit into 180 equal parts, and by Celsius into 100 equal...
Σελίδα i - SMITH.— THE STUDY OF HEAT. By J. HAMBLIN SMITH, MA, of Gonville and Caius College, Cambridge. Crown 8vo., y.
Σελίδα 3 - The temperature of a body is its thermal state considered with reference to its power of communicating heat to other bodies...
Σελίδα 70 - ... 240° without being painful to our organs of sensation, and a temperature near this was experienced for some minutes, by Sir Joseph Banks, Sir Charles Blagden, and Dr. Fordyce, in a room artificially heated. The power of abstracting heat in air is likewise comparatively very small; in the high northern latitudes a cold has been experienced without injury, in which mercury froze; and if, in this state of the atmosphere, metallic substances, of the same temperature, were touched, a sensation like...
Σελίδα 58 - We shall therefore consider the nature of radiation, whether of light or heat, in an independent manner, and show why we believe that what is called radiant heat is the same thing as what is called light, only perceived by us through a different channel. The same radiation which when we become aware of it by the eye we call light, when we detect it by a thermometer or by the sensation of heat we call radiant heat.
Σελίδα 5 - No previous acquaintance with the peculiar relation of each body to heat could have assured us of this, and we owe the discovery entirely to the thermometer. We must therefore adopt, as one of the most general laws of heat, the principle that all bodies communicating freely with one another, and exposed to no inequality of external action, acquire the same temperature, as indicated by a thermometer.
Σελίδα 94 - 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.