An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 3
... objects ; the sense of feeling also indicates these points , but in a much less defined manner . The ear informs us of certain motions or vibrations existing around us ; the nose and palate are minor means of doing the same . The eye ...
... objects ; the sense of feeling also indicates these points , but in a much less defined manner . The ear informs us of certain motions or vibrations existing around us ; the nose and palate are minor means of doing the same . The eye ...
Página 4
... objects , the only action outside the eye being mo- tion , the action within the eye being the motion of the nerve , which motion and its mental result constitute light . It cannot be too strongly or too clearly stated that light ...
... objects , the only action outside the eye being mo- tion , the action within the eye being the motion of the nerve , which motion and its mental result constitute light . It cannot be too strongly or too clearly stated that light ...
Página 5
... object ; that these points each radiate force or energy , either as matter or motion ; and that these forces , so radiated , proceed quite independently of each other , and are capable of being grouped in innumerable ways so as to ...
... object ; that these points each radiate force or energy , either as matter or motion ; and that these forces , so radiated , proceed quite independently of each other , and are capable of being grouped in innumerable ways so as to ...
Página 6
... objects before it . But for the existence of the rays a luminous body is necessary . By a luminous body I mean a body in a state of intense vibration . If this vibration depend upon a force within the vibrating body , then it is self ...
... objects before it . But for the existence of the rays a luminous body is necessary . By a luminous body I mean a body in a state of intense vibration . If this vibration depend upon a force within the vibrating body , then it is self ...
Página 7
... objects in contact with our body . I put my hand in hot water and I am conscious of what I call heat - i.e . , the vibration of the particles of the water . I take up a snowball , and I am conscious of what I call cold - i.e . , the ...
... objects in contact with our body . I put my hand in hot water and I am conscious of what I call heat - i.e . , the vibration of the particles of the water . I take up a snowball , and I am conscious of what I call cold - i.e . , the ...
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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.