Відгуки відвідувачів - Написати рецензію
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adjusted angle apparatus axis barometer battery beam block body Boyle's law brass Bunsen burner burette caliper calorimeter cell centre circuit clamp coil column cork cubic centimetre curve cylinder Daniell cell deflection density of water determine diameter direction disc distance edge electromotive force electroscope equal equilibrium Errors experiment expressed fork galvanometer given glass tube grammes grammes of water Jolly's balance length lens liquid magnet mark mass of water means measure melting meniscus mercury metal metre metric micrometer millimetre mirror needle observations obtained Ohm's law parallax parallel pendulum plane plate pointer position pressure Procedure quantity of heat raise resistance scale division screw side solid specific gravity steam substance surface take the reading tangent tangent galvanometer temperature tenths thermometer tion unit velocity of sound vernier vertical vibration volume water equivalent waves weight wire zero reading
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 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.