An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 11
... 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 wire through which an electric ...
... 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 wire through which an electric ...
Página 13
... ordinary water , crystallised , as in ice , or vapour , as in steam . Figs . 11 , 12 , and 13 , show three instru- ments by which these fixed degrees of temperature that of freezing water and that of boiling water — are utilised , to en ...
... ordinary water , crystallised , as in ice , or vapour , as in steam . Figs . 11 , 12 , and 13 , show three instru- ments by which these fixed degrees of temperature that of freezing water and that of boiling water — are utilised , to en ...
Página 16
... to the vibration altogether - just as when we walk on the flat top of a large table - land we are unconscious of being above the ordinary level , having no means of comparison . ACOUSTICS . SOUND . ( 1. ) Introduction . -
... to the vibration altogether - just as when we walk on the flat top of a large table - land we are unconscious of being above the ordinary level , having no means of comparison . ACOUSTICS . SOUND . ( 1. ) Introduction . -
Página 19
... ordinary string and shake it loosely in the air , I get no sound ; but if I put my foot on one end , and hold- ing the other in one hand , stretching the string tightly , I strike it with my finger or a penholder , I get a buzzing noise ...
... ordinary string and shake it loosely in the air , I get no sound ; but if I put my foot on one end , and hold- ing the other in one hand , stretching the string tightly , I strike it with my finger or a penholder , I get a buzzing noise ...
Página 30
... ordinary air ; this is because of the greater force required to move , or set in vibration , the heavier gas ; or rather , because of the smaller quantity of the heavy gas that any given force can set in motion as compared with the ...
... ordinary air ; this is because of the greater force required to move , or set in vibration , the heavier gas ; or rather , because of the smaller quantity of the heavy gas that any given force can set in motion as compared with 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.