HeatD. Appleton, 1874 |
Términos y frases comunes
1+at 1+KT absorbed alcohol amount of heat apparatus apparent expansion atmosphere body boiler boiling boiling-point Boyle's law bulb called calorimeter carbon carbonic acid Centigrade coefficient of expansion cold condensed conducting power consists containing cooling cubic cylinder degree denote density dew-point diathermancy ebullition effect employed energy engine equal equation equivalent ether evaporation experiment external Fahrenheit freezing freezing mixture freezing-point gases given glass globe heat of fusion heat required hygrometer inches increase indicated instrument lamp-black latent heat liquid lower manometer mass maximum tension means measure melting metal millimetres mixture motion observed obtained pass perature piston placed plate portion produced quantity of heat radiation raise ratio rays Regnault relative density reservoir saturated slide-valve solid source of heat specific heat steam substance sulphuric acid Suppose surface tempera temperature thermal capacity thermometer tion tube ture vapour vapour-tensions variations velocity vessel volume weight zero
Pasajes populares
Página 285 - There is a river in the ocean. In the severest droughts it never fails, and in the mightiest floods it never overflows. Its banks and its bottom are of cold water, while its current is of warm. The Gulf of Mexico is its fountain, and its mouth is in the Arctic Seas. It is the Gulf Stream.
Página 286 - ... are of cold water, while its current is of warm; the Gulf of Mexico is its fountain, and its mouth is in the Arctic Seas. It is the Gulf Stream. There is in the world no other such majestic flow of waters. Its current is more rapid than the Mississippi or the Amazon, and its volume more than a thousand times greater.
Página 461 - ... might be used in cooking victuals. But no circumstances could be imagined in which this method of procuring heat would be advantageous ; for more heat might be obtained by using the fodder necessary for the support of a horse as fuel.
Página 453 - Q are related by р/с' = constant, where y is the ratio of specific heat at constant pressure to specific heat at constant volume, for compressible fluids.
Página 315 - A glacier is an imperfect fluid, or a viscous body which is urged down slopes of a certain inclination by the mutual pressure of its parts.
Página 349 - The knowledge of the maximum tension of the vapour of water at various temperatures is important, not only from a theoretical, but also from a practical point of view, inasmuch as this tension is the motive force in the steam-engine.
Página 327 - C. (877° F.), may therefore be called the critical temperature for carbonic acid; and it is probable that every other substance, whether usually occurring in the gaseous or in the liquid form, has in like manner its own critical temperature. Dr. Andrews found that nitrous oxide, hydrochloric acid, ammonia, sulphuric ether, and sulphuret of carbon, all exhibited critical temperatures, which, in the case of some of these substances, were above 100° C.
Página 427 - Since cw is unity, the specific heat of a substance is numerically equal to its thermal capacity. In a loose sense the thermal capacity is often called specific heat, but the student should observe that the same relation holds between these two...
Página 268 - As a necessary consequence of Mariotte's law, it may be stated that the density of a gas varies directly as the pressure, and inversely as the volume ; that is, the density increases as the pressure increases, and decreases as the volume increases. This is evident, since if a gas has a tension of...
Página 426 - Calculation, based on this principle, is found to agree very accurately with experiment up to about 40° C. We may therefore define the unit of heat as the quantity of heat required to raise the temperature of unit mass of water 1°, between the limits 0° C. and 40° C. THERMAL CAPACITY.