Elements of PhysicsGinn, 1927 - 509 pages |
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Page 18
... mechanics , and a new machine for the multipli- cation of force to any required extent , since one man will by this means be able to move any given weight . " 24. The hydraulic press . The experimental proof of the 18 PRESSURE IN LIQUIDS.
... mechanics , and a new machine for the multipli- cation of force to any required extent , since one man will by this means be able to move any given weight . " 24. The hydraulic press . The experimental proof of the 18 PRESSURE IN LIQUIDS.
Page 20
... machine . This important conclusion will be found in our future study to apply to every type of machine . 26. The hydraulic elevator . Another very common use of the above principle of the transforma- tion of pressure by liquids is ...
... machine . This important conclusion will be found in our future study to apply to every type of machine . 26. The hydraulic elevator . Another very common use of the above principle of the transforma- tion of pressure by liquids is ...
Page 46
... machines as air drills ( used in mining ) , air brakes , air B F R FIG . 43. A simple air pump motors , etc. that the compression pump must be looked upon as of much greater importance industrially than the exhaust pump . ( See opposite ...
... machines as air drills ( used in mining ) , air brakes , air B F R FIG . 43. A simple air pump motors , etc. that the compression pump must be looked upon as of much greater importance industrially than the exhaust pump . ( See opposite ...
Page 48
... machine . This was the longest air flight in history , covering 3200 nautical miles , from Scotland to New York , in exactly 4 days , or 108 hours . On account of severe weather conditions and the route taken the actual distance covered ...
... machine . This was the longest air flight in history , covering 3200 nautical miles , from Scotland to New York , in exactly 4 days , or 108 hours . On account of severe weather conditions and the route taken the actual distance covered ...
Page 83
... machines now depends , namely , control of stability by the warp- ing of wings , or by ailerons ( hinged attachments to ... machine , Wilbur running beside it as it rose from the track ) . Four such flights were made on the morning of ...
... machines now depends , namely , control of stability by the warp- ing of wings , or by ailerons ( hinged attachments to ... machine , Wilbur running beside it as it rose from the track ) . Four such flights were made on the morning of ...
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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.