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acceleration alternating current amperes amplitude angular angular velocity armature axis battery body called cathode center of mass charge circuit cm² cm³ coil colors condenser conductor corresponding cylinder diagram direct current direction displacement distance dynamo dynes electric electrolysis electromotive force electroscope engine equal equation ergs experiment fluid galvanometer glass graph heat Hence induced current kinetic energy lamps lens angle lever light lines of force liquid loop measure mechanical advantage moment of inertia motor moving musical scale notes number of vibrations object overtones particles passes pipe piston plane plate pole pressure produce proportional pump radius ratio relation represent resistance resultant rotation scale sec2 simple simple harmonic motion sound spectrum steam string substances surface temperature tion tone train tube vapor vector velocity vertical vibration numbers voltaic cell volts volume wave length weight wheel wire
Popular passages
Page 48 - 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.
Page 130 - The loss of weight of a body immersed in a fluid is equal to the weight of the displaced fluid, or a body immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced by it.
Page 128 - We took then a long glass tube which by a dexterous hand and the help of a lamp was in such a manner crooked at the bottom that the part turned up was almost parallel to the rest of the tube...
Page 126 - Archimedes stated that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid. By means of this principle, known as Archimedes' principle, he determined that a crown was not pure gold.
Page 350 - It will be seen from the above that the number of beats per second is equal to the difference in the vibration numbers of the two forks.
Page 267 - ... a farad. The Ampere = the current driven through one ohm by one volt. A milliampere is the thousandth part of an ampere. The Coulomb — the quantity of electricity given by one ampere in one second. The Joule — the energy expended in one second by one ampere flowing through one ohm. The Watt — the power of a current of one ampere under a pressure of one volt = 44-23 approximate foot Ibs.
Page 117 - ... water-containing fluids are used where fire resistance is needed. See fire-resistant fluids. hydraulic system — system designed to transmit power through a liquid medium, permitting multiplication of force in accordance with Pascal's law, which states that "a pressure exerted on a confined liquid is transmitted undiminished in all directions and acts with equal force on all equal areas.
Page 60 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Page 389 - The angular magnification of a telescope is therefore equal to the ratio of the focal length of the objective to that of the ocular.