A Text-book of Physics: Largely Experimental. On the Basis of the Harvard College "Descriptive List of Elementary Physical Experiments." |
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apparatus applied axis balance ball barometer block body boiling bottle Boyle's law brass bulb calculate called calorimeter cell centimeter centre of gravity column convex lens copper cork cross-section cubic cylinder Daniell cell density diameter direction distance electricity electromotive force electroscope energy equal equilibrium Exercise expansion experiment fastened friction galvanic cell galvanoscope gases glass tube gram heat horizontal kerosene kilogram latent heat lens lenses light liquid magnet means measure melting mercury metal meter meter-rod motion nearly needle object ordinary pendulum piece piston placed plane plate points of application position poundal pressure prism produced rays refraction resistance resultant rubber tube screen shown in Fig side solid sound sound-wave specific gravity specific heat spring-balance stopper strip student substance surface temperature thermometer tion Trowbridge unit vapor velocity vertical vessel vibrations volume weight wire zinc
Popular passages
Page 295 - When a ray of light passes from one medium to another, it is refracted so that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the velocities in the two media.
Page 37 - The principle is usually stated nearly as follows: Pressure exerted anywhere upon a mass of liquid is transmitted undiminished in all directions and acts with the same force upon all equal surfaces and in a direction at right angles to those surfaces.
Page 2 - Since force is the result of motion, we may say that anything and everything that moves or can be moved, or whose position in space may be changed is matter. There are many forms of matter that cannot be seen or felt, and can be recognized only by their motions.
Page 194 - Theory of Heat, states it as follows: The volume of a gas under constant pressure expands when raised from the freezing to the boiling temperature [of water} by the same fraction of itself , whatever be the nature of the gas.
Page 258 - Since sound-waves travel outward from their centres with uniform velocity in ever-enlarging hollow spheres, and since the surfaces of spheres are proportional to the squares of their radii, it is plain that a given amount of energy in the shape of a sound-wave must, as it recedes from its source, occupy — if none of it is lost on the way — successive portions of space, which increase with the square of the Flo.
Page 142 - C R', which is an example of the use of formula 8. .£'also represents the loss, or drop, of potential in volts between the two points. If a,ny two of these quantities are known, the third can be readily found; for, E' E' by transposing, C = ~ and A" = ~, as already given in jv C formulas 6 and 7.
Page 120 - ... vessel. It is an interesting fact, which the student can verify for himself by floating a light board, that a floating body may be in very stable equilibrium with the centre of gravity above the centre of buoyancy, and even above the surface of the liquid.
Page 57 - In calculating specific gravities of solids and liquids the formula employed will frequently be the following, or some modification of it: ... ., weight of substance in air specific gravity = — =-^ — -^ =— - > loss of weight in water for the loss of weight in water is (by Archimedes' principle) the weight of the displaced water, and therefore of a volume of water equal to the volume of the object which is being examined. 56. Illustration of Differences of Specific Gravity. — To illustrate...