Physics: With Applications |
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Common terms and phrases
acceleration air pump applied armature atmosphere axis ball barometer bell jar body capillary action cell centripetal acceleration circuit cm.³ coil colors compressed conductor copper cubic centimeter cylinder density diameter direction disk displaced distance dynes earth electric electromotive force energy equal Equation FIGURE focal length forces act fork gases glass tube gram of force heat Hence hydrometer illustrate inch inclined plane iron kilogram lamp lens lever lifted light liquid machine magnetic mass measured mechanical advantage mercury meter metric system motion moving parallel pendulum pipe piston plate pole position pounds pressure principal focus principle prism produced rays reflected refraction resistance right angles rotation scale screen simple harmonic motion solid sound specific gravity speed spring square steam surface temperature tion transverse wave unit valve velocity vertical vessel vibration volume wave weight wire zinc
Popular passages
Page 307 - The relative humidity of the air is the ratio between the amount of water vapor actually present and the amount that would be present if the air were saturated at the same temperature.
Page 117 - Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
Page 75 - At a constant temperature the volume of a given mass of gas varies inversely as the pressure sustained by it. If the volume of gas v under a pressure p becomes volume v' when the pressure is changed to p', then by the law: , H- = £- ; whence pv =p'v'.
Page 156 - ... the work done in overcoming the resistance, except that some of the applied energy may be dissipated as heat or may not appear in mechanical form. A machine can never produce an increase of energy so as to give out more than it receives. Denote the applied force, or effort, by E and the resistance by R, and let D and d denote the distances respectively through which they work. Then from the law of conservation of energy, the effort multiplied by the distance through which it acts is equal to...
Page 220 - This experiment shows that the intensity of illumination varies inversely as the square of the distance from the source of light.
Page 59 - SPECIFIC GRAVITY. THE Specific Gravity of a body, is the ratio of its weight to the weight of an equal volume of some other body assumed as a standard.
Page 6 - ... than it originally filled. Therefore, as no two particles of matter can occupy the same space at the same time, the space, by which the size or volume of a body may be diminished by pressure, must, before such diminution took place, have been filled with openings, or pores.
Page 23 - ... the centimeter as the unit of length, the gram as the unit of mass, and the second as the unit of time.
Page 6 - The general property of matter that no two bodies can occupy the same space at the same time is known as impenetrability.
Page 393 - The Horseshoe Magnet. — The form given to an electromagnet depends on the use to which it is to be put. The horseshoe or U-shape (Fig.