An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 68
... copper , and place a source of heat , such as a candle , at one of the points where the metals are joined , I find that an electric current is excited in the wire . The explanation of this result seems to be that the current of heat ...
... copper , and place a source of heat , such as a candle , at one of the points where the metals are joined , I find that an electric current is excited in the wire . The explanation of this result seems to be that the current of heat ...
Página 69
... copper , platinum , silver , zinc , iron , and antimony , may all be used . If any two of these be taken , and heat be applied , the current will pass across the heated point from the first to the last mentioned in the list . ( 14 ...
... copper , platinum , silver , zinc , iron , and antimony , may all be used . If any two of these be taken , and heat be applied , the current will pass across the heated point from the first to the last mentioned in the list . ( 14 ...
Página 70
... copper in a room , and I feel heat to be given off from it on all sides . According to one theory , heat , as an imponderable invisible fluid , is emitted from every point of the heated body ; according to the other theory , the ball ...
... copper in a room , and I feel heat to be given off from it on all sides . According to one theory , heat , as an imponderable invisible fluid , is emitted from every point of the heated body ; according to the other theory , the ball ...
Página 76
... copper from .095 to .101 . Platinum does not vary in this way ; but this is pro- bably because of its high melting - point , for this has a great influ- ence- showing that it is the loosening and separation of the atoms that affects the ...
... copper from .095 to .101 . Platinum does not vary in this way ; but this is pro- bably because of its high melting - point , for this has a great influ- ence- showing that it is the loosening and separation of the atoms that affects the ...
Página 77
... Copper , 8.788 0.0951 63.5 6.0388 Lead , 11.445 0.0314 207 6.4998 Gold , 19.358 0.0324 196 6.3504 LIQUIDS . Alcohol ... copper 63.5 ; so that if we take an ounce of each , then whatever number of atoms of lithium we have , the ounce of ...
... Copper , 8.788 0.0951 63.5 6.0388 Lead , 11.445 0.0314 207 6.4998 Gold , 19.358 0.0324 196 6.3504 LIQUIDS . Alcohol ... copper 63.5 ; so that if we take an ounce of each , then whatever number of atoms of lithium we have , the ounce of ...
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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
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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.