Practical PhysicsGinn, 1922 - 472 pages |
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Page 90
... wires . P FIG . 92. Elasticity of a steel wire Thus , let a long steel wire ( for ex- ample , No. 26 piano wire ) be suspended from a hook in the ceiling , and let the * This chapter should be preceded by a laboratory experiment in ...
... wires . P FIG . 92. Elasticity of a steel wire Thus , let a long steel wire ( for ex- ample , No. 26 piano wire ) be suspended from a hook in the ceiling , and let the * This chapter should be preceded by a laboratory experiment in ...
Page 91
... wire , and let the other end of the stick be provided with a knitting needle , one end of which is opposite the vertical mirror scale S. Let enough weights be applied to the pan P to place the wire under slight tension ; then let the ...
... wire , and let the other end of the stick be provided with a knitting needle , one end of which is opposite the vertical mirror scale S. Let enough weights be applied to the pan P to place the wire under slight tension ; then let the ...
Page 93
... wire , how much force is required to break two such wires hanging side by side ? to break one wire of twice the diameter ? MOLECULAR FORCES IN LIQUIDS . CAPILLARY PHENOMENA 113. Proof of the existence of molecular forces in liquids ...
... wire , how much force is required to break two such wires hanging side by side ? to break one wire of twice the diameter ? MOLECULAR FORCES IN LIQUIDS . CAPILLARY PHENOMENA 113. Proof of the existence of molecular forces in liquids ...
Page 96
... wire ring , as in Fig . 95 . Let the ring be dipped into a soap solution so as to form a film across it , and then let a hot wire be thrust through the film inside the loop . The tendency of the film outside the loop to contract will ...
... wire ring , as in Fig . 95 . Let the ring be dipped into a soap solution so as to form a film across it , and then let a hot wire be thrust through the film inside the loop . The tendency of the film outside the loop to contract will ...
Page 101
... wire . The matches will spring apart . What does this show about the effect of temperature on surface tension ? 6. Repeat the experiment , touching the water with a wire moistened with alcohol . What do you infer as to the relative ...
... wire . The matches will spring apart . What does this show about the effect of temperature on surface tension ? 6. Repeat the experiment , touching the water with a wire moistened with alcohol . What do you infer as to the relative ...
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ammeter amperes angle armature ball body calories carbon charge circuit coil color condenser conductor convex lens copper cubic centimeter Daniell cell density diameter direction distance dynamo earth electric electric charge electroscope engine equal experiment fact fall flame focal length fork freezing friction galvanic cell galvanometer gases glass gram gravity heat Hence hydrogen inch induced iron kinetic energy lamp Leclanché cell lens lever light lines of force liquid magnet mass mechanical advantage mercury metal meter mirror molecules motion moving needle ohms opposite overtone pass pipe piston placed plane plate pole position potential pressure produced pull pump QUESTIONS AND PROBLEMS rays reflected resistance rotation shown in Fig shows sound specific gravity speed steam substances surface temperature thermometer tion tube vapor velocity vessel vibration volts wave length weight wheel wire zinc