An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 11
... greater attractive force . An ordinary piece of steel may be made into a magnet by being stroked several times with another magnet . A piece of soft iron may be magnetised by putting it near a steel magnet , or by surrounding it by a ...
... greater attractive force . An ordinary piece of steel may be made into a magnet by being stroked several times with another magnet . A piece of soft iron may be magnetised by putting it near a steel magnet , or by surrounding it by a ...
Página 13
... greater smoothness of their surfaces . The finer the grains of sand , the more readily would they be impressed with the form of the containing vessel , and , so far , the more nearly would they approach the condition of a fluid . The ...
... greater smoothness of their surfaces . The finer the grains of sand , the more readily would they be impressed with the form of the containing vessel , and , so far , the more nearly would they approach the condition of a fluid . The ...
Página 15
... greater than its at- traction for the cork , the lead will be drawn down and the cork consequently drawn up . But why has the earth greater attraction for lead than for cork ? It cannot be imagined that this depends on the nature of the ...
... greater than its at- traction for the cork , the lead will be drawn down and the cork consequently drawn up . But why has the earth greater attraction for lead than for cork ? It cannot be imagined that this depends on the nature of the ...
Página 16
... greater for light than for sound ; and , conversely , that the wave- length is much greater for sound than for light . If the number of vibrations be too great to enable the ear or eye to distinguish one from another , the result is ...
... greater for light than for sound ; and , conversely , that the wave- length is much greater for sound than for light . If the number of vibrations be too great to enable the ear or eye to distinguish one from another , the result is ...
Página 19
... greater the 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 ...
... greater the 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 ...
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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.