An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 7
... quantity of gunpowder is ignited ; the gases produced require very much more room than the constituents of the powder ; the air is driven back so as to leave a sphere ( 1 ) , fig . 2 , which these gases fill ; this driving force is ...
... quantity of gunpowder is ignited ; the gases produced require very much more room than the constituents of the powder ; the air is driven back so as to leave a sphere ( 1 ) , fig . 2 , which these gases fill ; this driving force is ...
Página 14
... quantity of water will weigh exactly the same as the water . A pound of ice will make neither more nor less than a pound of water , and may be converted into steam that will still weigh exactly a pound . So that the expansion and ...
... quantity of water will weigh exactly the same as the water . A pound of ice will make neither more nor less than a pound of water , and may be converted into steam that will still weigh exactly a pound . So that the expansion and ...
Página 19
... quantity of air set in motion , the louder the sound : the quality depends on the nature and form of the body set in motion . If I take a piece of ordinary string and shake it loosely in the air , I get no sound ; but if I put my foot ...
... quantity of air set in motion , the louder the sound : the quality depends on the nature and form of the body set in motion . If I take a piece of ordinary string and shake it loosely in the air , I get no sound ; but if I put my foot ...
Página 23
... quantity of water from far off to the land . But careful notice of floating objects , such as pieces of wood , bottles , & c . , shows that the water does but rise and fall . In the same way the passing of a brisk wind over a field of ...
... quantity of water from far off to the land . But careful notice of floating objects , such as pieces of wood , bottles , & c . , shows that the water does but rise and fall . In the same way the passing of a brisk wind over a field of ...
Página 29
... quantity of a light one ; and as a consequence , the same force will set in vibration a greater quan- tity of a light gas than of a heavy one . d " d Let A represent a quantity of heavy gas ( say carbonic acid ) , which must necessarily ...
... quantity of a light one ; and as a consequence , the same force will set in vibration a greater quan- tity of a light gas than of a heavy one . d " d Let A represent a quantity of heavy gas ( say carbonic acid ) , which must necessarily ...
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Palavras e frases frequentes
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
Passagens conhecidas
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.