Essentials of PhysicsAmerican Book Company, 1913 - 536 pages |
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Page 93
... lower side of the pin B , and put a second pin through , with its upper side at C. Invert the bat and vibrate from C , and it will be found to vibrate in the same time as before . The axis at B , in the left half of. and let it swing ...
... lower side of the pin B , and put a second pin through , with its upper side at C. Invert the bat and vibrate from C , and it will be found to vibrate in the same time as before . The axis at B , in the left half of. and let it swing ...
Page 108
... lower end . The only way in which an inclined plane can be used efficiently is to have the moving FIG . 85 force act in a direction that is parallel to the inclined surface of the plane . Inclined planes are used for the purpose of ...
... lower end . The only way in which an inclined plane can be used efficiently is to have the moving FIG . 85 force act in a direction that is parallel to the inclined surface of the plane . Inclined planes are used for the purpose of ...
Page 120
... lower part of the figure . If the needle is placed below the surface , it will sink at once . FIG . 101 NOTE . In all experiments on liquid sur- faces great care must be taken to keep the water , and everything that comes in contact ...
... lower part of the figure . If the needle is placed below the surface , it will sink at once . FIG . 101 NOTE . In all experiments on liquid sur- faces great care must be taken to keep the water , and everything that comes in contact ...
Page 126
... Lower the cup into a beaker of water and observe the change in Explain this action . Measure this pressure by putting a scale back of the tube at A. 132. Diffusion of Liquids . - Demonstration . — Fill a small jar three fourths full of ...
... Lower the cup into a beaker of water and observe the change in Explain this action . Measure this pressure by putting a scale back of the tube at A. 132. Diffusion of Liquids . - Demonstration . — Fill a small jar three fourths full of ...
Page 129
... lower end of which dips below the surface , but sap runs from the end of a maple branch that has been cut off . Explain . 12. Could a lump of sugar be used to take up a blot of ink ? 13. A glass rod is sometimes placed against the edge ...
... lower end of which dips below the surface , but sap runs from the end of a maple branch that has been cut off . Explain . 12. Could a lump of sugar be used to take up a blot of ink ? 13. A glass rod is sometimes placed against the edge ...
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Common terms and phrases
amperes angle axis ball beaker binding posts body called candle power carbon cell center of gravity charge circuit coil color conductor convex lens copper cylinder Demonstration density diameter direction disk distance dynamo earth electric electroscope energy equal friction galvanometer gases give glass rod glass tube heat horizontal inch increase induction iron lamp lens lever Leyden jar light lines of force liquid machine magnet measure mechanical advantage mercury metal mirror molecules motion moving needle number of vibrations ohms parallel Pascal's Law passes pendulum piece piston plane plate pole position potential poundal pressure pump rays reflected refraction resistance result rotation scale sewing needle shown in Fig shows side sound spark specific gravity steam strike surface suspended temperature thermometer tion tone vapor velocity vertical vibrations volts wave length weight wheel wire zinc
Popular passages
Page 80 - Every particle of matter in the universe attracts every other particle with a force that varies directly as the product of their masses, and inversely as the square of the distance between them.
Page 49 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.
Page 81 - While the term gravitation is applied to the universal attraction existing between particles of matter, the more restricted term gravity is applied to the attraction that exists between the earth and bodies upon or near its surface. The law given above applies to gravity, provided that d is measured in a straight line from the center of the earth to the center of mass of the body. This line is called a vertical line, or sometimes a plumb line (from the Latin word plumbum, which means " lead "), as...
Page 186 - Jar, bent towards the negative side ; a pith ball, under similar circumstances, moves in the same direction ; when a charged Jar is placed under the receiver of an air pump, and the air is exhausted, a luminous cloud flows from the positive to the negative side, in whichever way the Jar is electrified.
Page 178 - The temperature remaining the same, the volume of a given mass of gas varies inversely as the pressure acting upon it. This may be expressed by the proportion V: V = P' : P, from which we get Pr=P'V, (42) ie PV= a constant quantity.
Page 148 - ... twenty years ago, sought to graft upon this basis a system of psychology ; and two years ago a second and greatly amplified edition of his work appeared. Those who...
Page 147 - A body immersed in a liquid is buoyed up by a force equal to the weight of the liquid displaced by it.
Page 282 - ... the specific heat of a substance is the number of calories required to change the temperature of 1 g.
Page 49 - Every body must persevere in its state of rest, or of uniform motion in a straight line, unless it be compelled to change that state by forces impressed upon it.
Page 446 - A'B = AB. This means that the image of a point in a plane mirror is on a perpendicular from the point to the mirror and as far behind the mirror as the object is in front of it.