Heat for Advanced StudentsMacmillan and Company, limited, 1903 - 478 стор. |
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Загальні терміни та фрази
absolute temperature absorbed adiabatic amount apparatus aqueous vapour atmospheric pressure barometer body boiling point Boyle's Law bulb c.cs calorimeter centimetre coefficient of expansion coefficient of linear column compressed condensed constant pressure contained cooling copper corresponding cubical curve cycle cylinder density Describe determined difference distance entropy equal equation experiment EXPT external filled flask freezing point galvanometer gases given glass tube gram gram of water h₁ heat engine Hence high temperature hydrogen hygrometer increase initial isothermal kinetic energy latent heat length Let us suppose linear expansion liquefied liquid Lond mass means measured melting point mercury thermometer metal method mixture molecules motion obtained paraffin wax passing perature perfect gas performed piece piston placed produced quantity of heat Regnault represents saturated vapour solid solidifying specific heat steam substance T₁ T₂ tempera thermal radiations thermopile therms ture vapour pressure velocity vessel W₁ weight whilst
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Сторінка 266 - 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 Heat was excited and communicated in these experiments, except it be MOTION.
Сторінка 360 - It is impossible by means of inanimate material agency to derive mechanical effect from any portion of matter by cooling it below the temperature of the coldest of the surrounding objects.
Сторінка 360 - It is impossible for a selfacting machine, unaided by any external agency to convey heat from one body to another at a higher temperature, or heat cannot of itself pass from a colder to a warmer body.
Сторінка 265 - Ib. of icecold water to boil) could have been furnished by so inconsiderable a quantity of metallic dust ? and this merely in consequence of a change of its capacity for Heat...
Сторінка 333 - It is impossible for a self-acting machine, unaided by any external agency, to convey heat from a body at a low to one at a higher temperature;" or " Heat cannot of itself (that is, without the performance of work by some external agency) pass from a cold to a warmer body.
Сторінка 429 - ... inch Ib. sec. units is -0012 and the latent heat of steam is 536. Find the temperature of the under side of the heating surface. Explain carefully why this is not the temperature of the furnace. 7. Define the thermal conductivity of a substance and describe some way of measuring it. 8. How many units of heat will be conducted in an hour through each square centimetre of an iron plate 0'02 cm. thick, its two sides being kept at the respective temperatures of 0°C. and 50° C., the mean conductivity...
Сторінка 113 - Again, at constant volume, the pressure of a given mass of gas is proportional to the absolute temperature (p.
Сторінка 331 - ... which he undertakes an obligation to keep the property in a proper state of repair, and to make replacements in order that at the end of the term he may restore the property in as good condition as that in which he received it, does not mean that the property will not depreciate at all, and that it will have the same value at the end as at the beginning of the term. To illustrate by a supposititious case, if A leases a building to B for thirty years, and B covenants to make all necessary repairs...
Сторінка 265 - ... removed the metallic dust, or, rather, scaly matter, which had been detached from the bottom of the cylinder by the blunt steel borer, in this experiment; and, having carefully weighed it, I found its weight to be 837 grains, Troy. Is it possible...
Сторінка 112 - ... the tube be inverted and filled with mercury ; then placing the finger on the open end, so as to prevent the mercury from escaping, reinvert it, and plunge the open end into a vessel of mercury ; if the finger be now removed, it will be seen that the mercury will stand at the height of about 29 or 30 inches in the tube, above the level of the mercury in the vessel. That the mercury is supported in the tube by the pressure of the air on the surface of the mercury in the vessel, is evident from...