A Manual of Elementary Practical Physics for High Schools

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H.W. Wilson, 1899 - 255 стор.
 

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Сторінка 164 - 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.
Сторінка 79 - ... and the perpendicular distance from the axis of rotation to the line of action of the force.
Сторінка 16 - The solar day is the interval between two successive transits of the sun's centre across the meridian of any given place.
Сторінка 230 - Ohm's law, the current generated is equal to the electromotive force divided by the resistance of the circuit.
Сторінка 73 - If three forces acting at a point are in equilibrium, they can be represented in magnitude and direction by the three sides of a triangle taken in order.
Сторінка 10 - TT is constant, or, the time of vibration of a pendulum varies directly as the square root of the length, and inversely as the square root of the accelerating force.
Сторінка 85 - The ratio of the weight of a given volume of a substance to the weight of an equal volume of water at 4 °C.
Сторінка 148 - The incident ray, the reflected ray, and the normal to the surface at the point of incidence, all lie in the same plane. When a ray of light is refracted, n sin <t> = n...
Сторінка 86 - A solid immersed in a liquid is buoyed up by a force equal to the weight of the liquid displaced.
Сторінка 95 - The pressure of a given mass of gas at constant temperature is inversely proportional to its volume.

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