An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 5
... considered not as a whole but as a group . A red - hot poker held in the middle of a room before quite dark , will radiate light around , because its atoms are vibrating with immense rapidity , and so scattering around them a force ...
... considered not as a whole but as a group . A red - hot poker held in the middle of a room before quite dark , will radiate light around , because its atoms are vibrating with immense rapidity , and so scattering around them a force ...
Página 16
... considered to be made up of atoms of matter , not in absolute contact , but kept together by mutual attraction . Just as the earth attracts a stone , so every particle of matter must be considered to attract every other par- ticle . A ...
... considered to be made up of atoms of matter , not in absolute contact , but kept together by mutual attraction . Just as the earth attracts a stone , so every particle of matter must be considered to attract every other par- ticle . A ...
Página 23
... whatever be their position , provided no obstacle intervene . This is what would be expected if the sound be considered to be a vibration , but is not explicable upon the assumption that sound is a transfer of actual.
... whatever be their position , provided no obstacle intervene . This is what would be expected if the sound be considered to be a vibration , but is not explicable upon the assumption that sound is a transfer of actual.
Página 24
... considered that the directions of sound seem in all cases to be quite independent of the law of gravitation , proceeding in un- erringly straight lines in every direction . And it seems almost as incredible that the particles of air in ...
... considered that the directions of sound seem in all cases to be quite independent of the law of gravitation , proceeding in un- erringly straight lines in every direction . And it seems almost as incredible that the particles of air in ...
Página 32
... considered to pass on , causing another compression of equal extent . This is a second sound - wave . The force still contínues , causing a third , fourth , and fifth sound - wave ; in fact CAUSES AFFECTING THE VELOCITY CF SOUND . 33 it ...
... considered to pass on , causing another compression of equal extent . This is a second sound - wave . The force still contínues , causing a third , fourth , and fifth sound - wave ; in fact CAUSES AFFECTING THE VELOCITY CF SOUND . 33 it ...
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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.