Elements of PhysicsGinn, 1927 - 509 pages |
From inside the book
Results 1-5 of 88
Page 4
... earth's quadrant , but simply as the distance between the scratches on the bar mentioned above . On account of its more convenient size the centi- meter ( one one - hundredth of a meter ) is universally used , for scientific purposes ...
... earth's quadrant , but simply as the distance between the scratches on the bar mentioned above . On account of its more convenient size the centi- meter ( one one - hundredth of a meter ) is universally used , for scientific purposes ...
Page 15
... earth's surface . Pressure is force per unit area . The pressure at a given point within a liquid is the same in all directions . Pressure , measured in grams per square centimeter , is PRESSURE BENEATH A FREE SURFACE 15.
... earth's surface . Pressure is force per unit area . The pressure at a given point within a liquid is the same in all directions . Pressure , measured in grams per square centimeter , is PRESSURE BENEATH A FREE SURFACE 15.
Page 35
... earth's surface in the same way in which eddies and high waves in a tank of water would affect the liquid pressure at the bottom of the tank . The barometer does not directly foretell the weather , but it has been found that a low or ...
... earth's surface in the same way in which eddies and high waves in a tank of water would affect the liquid pressure at the bottom of the tank . The barometer does not directly foretell the weather , but it has been found that a low or ...
Page 40
... earth and muck into the space where they work . As material is removed ( see left end of picture ) , powerful jacks press forward a cylindrical shield , inside of which the tunnel lining of cast - iron segments is built up . A concrete ...
... earth and muck into the space where they work . As material is removed ( see left end of picture ) , powerful jacks press forward a cylindrical shield , inside of which the tunnel lining of cast - iron segments is built up . A concrete ...
Page 41
... earth's atmosphere . From the facts of compressibility and expansibility of air we may know that the air , un- like the sea , must become less and less dense as we ascend from the bottom toward the top . Thus , at the summit of Mont ...
... earth's atmosphere . From the facts of compressibility and expansibility of air we may know that the air , un- like the sea , must become less and less dense as we ascend from the bottom toward the top . Thus , at the summit of Mont ...
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Common terms and phrases
ammeter amperes armature ball body Boyle's law calories charge circuit coil condenser conductor connected copper cubic centimeter cylinder density direction distance dynamo earth electric electrical charge electroscope engine equal experiment fall feet flow force acting freezing friction galvanic cell galvanometer gases glass gram heat Hence hydrogen inch induced iron kinetic energy lamp lens Lenz's law lever Leyden jar lift light lines of force liquid machine magnetic field mass measured mechanical advantage mercury metal meter molecules motion motor move needle nonconductor Ohm's law ohms opposite pass pipe piston placed plane plate pole position pounds pressure produced pull pulley QUESTIONS AND PROBLEMS rays resistance rotation shown in Fig shows solid specific gravity speed steam substances surface temperature thermometer tion tube vacuum vapor velocity vessel vibration volts volume wave length weight wheel wire zinc
Popular passages
Page 92 - 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 498 - And show me how they calculated the initiatory speed of our car?" "Yes, my worthy friend; taking into consideration all the elements of the problem, the distance from the center of the earth to the center of the moon...
Page 64 - ... is, the resultant of two parallel forces acting in the same direction is equal to the sum of the two forces.
Page 114 - ... work accomplished is measured by the product of the force acting and the distance through which it moves the body.
Page 2 - ... the inch, the hand, the foot, the fathom, the rod, the mile, etc., have been derived either from the lengths of different members of the human body or from equally unrelated magnitudes, and in consequence have been connected with one another by different, and often by very awkward, multipliers. Thus, there are 12 inches in a foot, 3 feet in a yard, 5^ yards in a rod, 1760 yards in a mile, etc. 4. Relations between units of length, area, volume, and mass. A similar and even worse complexity exists...
Page 163 - The calorie is the amount of heat that is required to raise the temperature of 1 gram of water through 1° C...
Page 25 - Therefore the specific gravity of a solid or a liquid body, is the ratio of its weight to the weight of an equal volume of water...
Page 284 - The resistance of any conductor is directly proportional to its length and inversely proportional to the area of its cross section or to the square of its diameter.
Page 128 - FIG. 228. slides up. When the force acting on the end of the lever has made one revolution, the weight which rests upon the top of the screw has evidently been lifted through a vertical distance equal to the distance between the threads. Has the hand which furnishes the power moved much farther than the weight has been lifted? For what purposes are jackscrews used ? The most common example of a screw is the bolt and nut. Why is a wrench used in turning a nut on a bolt ? The screw press and the vise...
Page 107 - If the cohesive force oF(Fig. 117) is strong in comparison with the adhesive force oE, the resultant oR will fall to the right of the vertical, in which case the liquid must be depressed about o. Whether, then, a liquid will rise against a solid wall or be depressed by it, will depend only on the relative strengths of the adhesion of the wall for the liquid and the cohesion of the liquid for itself.