An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 8
... metal of the kettle , the liquid water within it , or the gaseous steam rising from it . All are in motion . If C be a heated ball placed on a metal anvil B ( fig . 3 ) , and a Water Air D Air Metal Fig . 3 . m Mi # Fig . 4 . vessel of ...
... metal of the kettle , the liquid water within it , or the gaseous steam rising from it . All are in motion . If C be a heated ball placed on a metal anvil B ( fig . 3 ) , and a Water Air D Air Metal Fig . 3 . m Mi # Fig . 4 . vessel of ...
Página 32
... metal ? I may this way , by extreme care , measure a mile of surface length , but cannot find two points exactly a mile apart . If I attempt , by means of a rod , to measure a mile through space a little above the surface ( so as to ...
... metal ? I may this way , by extreme care , measure a mile of surface length , but cannot find two points exactly a mile apart . If I attempt , by means of a rod , to measure a mile through space a little above the surface ( so as to ...
Página 36
... metal undoes this work , and carries it back from B to A. Why should it not rest there ? Why continue in motion ? Why stop at C ? B To answer these questions let me take another illustration . A weight , say 56 lb. , is resting on a ...
... metal undoes this work , and carries it back from B to A. Why should it not rest there ? Why continue in motion ? Why stop at C ? B To answer these questions let me take another illustration . A weight , say 56 lb. , is resting on a ...
Página 41
... metal against a toothed wheel , so that the teeth of the wheel , when rapidly revolving , strike suc- cessively against it , I get a continuous sound , because the condi- tions are now the same as in the case of the vibrating fork . The ...
... metal against a toothed wheel , so that the teeth of the wheel , when rapidly revolving , strike suc- cessively against it , I get a continuous sound , because the condi- tions are now the same as in the case of the vibrating fork . The ...
Página 42
... metal prong are also produced by the vibration of a string or wire . I take an ordinary violin - string , fasten one end to anything and tighten it either by passing the other end round a screw ( as in a violin ) or by fasten- ing a ...
... metal prong are also produced by the vibration of a string or wire . I take an ordinary violin - string , fasten one end to anything and tighten it either by passing the other end round a screw ( as in a violin ) or by fasten- ing a ...
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absorbed acid action amount of heat angle antimony apparatus arrangement atoms attraction ball battery becomes bismuth body carbon chemical coil colour conducting conductor connection continuous copper current passes decomposed decreases density direction distance earth effect electric current electric force electrified electroscope equal ether excited galvanic galvanometer gases given glass greater hydrogen inches increase latent heat length less Leyden jar light falling light passing liquid magnet magnetised means measure medium mercury metal mirror motion move needle negative nitric acid number of vibrations ordinary oxygen parallel particles passage piece plate platinum polarised pole position prism produce quantity radiation ray of light refraction repulsion result side soft iron solid sound sound-wave spark specific heat spectrum string substance sulphuric acid surface temperature theory thickness tion tricity tube velocity velocity of sound weight whole wire zinc
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Página 54 - ... the angle of reflection is always equal to the angle of incidence, the image for any point can be seen only in the reflected ray prolonged.
Página 391 - A Manual of Palaeontology, for the Use of Students. With a General Introduction on the Principles of Palaeontology.
Página 292 - ... before incidence. Hence the reflected rays, on being produced back, will meet at a point as far behind the reflector as the point of the object is in front of it.