A Text-book of Practical Physics |
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Common terms and phrases
adjustment ammeter amperes angle apparatus axis body bulb calculated calorimeter cell centre circuit coefficient coil concave concave lens connected constant convex lens copper cord corresponding curvature curve deflection density Determination direction disk distance dynes earth's field electricity electroscope equal equation equivalent experiment EXPT fixed focal length friction given glass gravity Hence horizontal Hygrometer liquid magnetic field magnetic force magnetic moment magnetometer mass means measured mercury method metre mirror Moment of Inertia motion moving needle object observations obtained ohms oscillation parallel passing pendulum placed plane plate pole position potential pressure prism pulley quantity R₁ radius ratio rays reading refractive index resistance result rotation scale scale-pan screw Simple Harmonic Motion specific gravity spherometer surface suspended t₁ taken tangent galvanometer telescope temperature thermometer tube velocity vernier vertical vibration voltmeter volume weight wire zero
Popular passages
Page 236 - 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 75 - ... the perpendicular distance from the axis to the line of action of the force.
Page 287 - The angular magnification of a telescope is defined as the ratio of the angle subtended at the eye by the final image /', to the angle subtended at the (unaided) eye by the object.
Page 71 - Section 153 may be considered as effective in resisting the moment at the section. The sectional area of a bar multiplied by the cosine of the angle between the direction of the axis of the bar and any other direction may be considered effective as reinforcement in that direction.
Page 144 - The moment of inertia of a body about any axis is equal to its moment of inertia about a parallel axis through the centre of gravity...
Page 358 - Newton's law of cooling" which states that the rate of decrease of the temperature of a body is proportional to the difference between the temperature of the body and that of the...
Page 50 - The specific gravity of any substance is the ratio of the weight of that substance to the weight of an equal volume of. some substance taken as a standard. In the metric system distilled water at 4°C.
Page 230 - The angle of incidence is equal to the angle of reflection. (The angle of incidence is the angle between the incident ray and the normal; the angle of reflection is the angle between the reflected ray and the normal.) In Fig.
Page 542 - EMF induced in a circuit is equal to the rate of decrease of the number of lines of...