A Text-book of PhysicsLongmans, Green, and Company, 1905 - 929 páginas |
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Términos y frases comunes
acceleration amplitude axis Boyle's law called calorimeter carbon dioxide centimetre centre Charles's laws circle colours column component consider constant convex lens corresponding curve cylinder density direction displacement distance equal equation equilibrium force acting fork frequency fundamental gases given glass gram gravity Hence incident increase interval kinetic energy latent heat lens light liquid magnitude mass means measured medium mercury metre mirror molecules motion moving nodal lines nodes object obtained overtones parallel particle pass pendulum period perpendicular piston pitch plane portion position prism produced quantity radius ratio reflected rays refracted ray refractive index represent resultant right angles rotation scale shown in Fig solid sound-waves sounding body specific heat speed sphere straight line string substance suppose surface temperature tone tube vapour pressure velocity of sound vertical vessel vibrations volume wave-front wave-length waves weight
Pasajes populares
Página 326 - 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.
Página 65 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.
Página 64 - Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
Página 67 - To every action there is always an equal and contrary reaction ; or the mutual actions of any two bodies are always equal and oppositely directed.
Página 365 - ... is the ratio of the specific heat at constant pressure to the specific heat at constant volume, is a constant.
Página 726 - ... force. 4. If the sphere be of crystalline substance, the lines of its magnetization may not in general be in the same direction as the lines of force of the field into which it is introduced ; and they are not so if the sphere, when free to turn round its centre, is observed to be not in equilibrium.
Página 459 - ... that the sine of the angle of refraction bears a constant ratio to the sine of the angle of incidence...
Página 439 - P' is called the image of the point P. It follows from the preceding section that the image of a point object formed by a plane mirror lies on the normal to the mirror and is as far behind the mirror as the object is in front of it.
Página 890 - Find the equation of an adiabatic of a refractory gas, such as air. (9) What are the properties which determine the velocity of sound in a solid, a liquid, or a gas ? Explain why Newton's value of the velocity of sound in air differs from the true value. Calculate the Newtonian velocity of sound in a gas whose density at standard pressure and temperature is I kilogram per cubic metre. What would you expect the true velocity to be ? (10) If a quantity of air at 15° C.
Página 2 - The difference between one event and another does not depend on the mere difference of the times or the places at which they occur, but only on differences in the nature, configuration, or motion of the bodies concerned.