An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 6
... mirror before me , not his features , but an image of the candle . The grouping of the vibrating points is preserved , reflected from mirror to mirror , and to my eyes . Seeing , therefore , is the effect of a radiant force called light ...
... mirror before me , not his features , but an image of the candle . The grouping of the vibrating points is preserved , reflected from mirror to mirror , and to my eyes . Seeing , therefore , is the effect of a radiant force called light ...
Página 18
... mirror on the wall , might see two lights ; or rather , see the same light twice - once in its place on the table , and again in the mirror , and apparently behind it . So with an echo : a sound striking against a large smooth surface ...
... mirror on the wall , might see two lights ; or rather , see the same light twice - once in its place on the table , and again in the mirror , and apparently behind it . So with an echo : a sound striking against a large smooth surface ...
Página 25
... mirror , and not from the bell itself . Really it does both . It comes from the bell by way , as it were , of the two mirrors , but its direction being so completely changed by the two reflections , I have no suggestion as to.
... mirror , and not from the bell itself . Really it does both . It comes from the bell by way , as it were , of the two mirrors , but its direction being so completely changed by the two reflections , I have no suggestion as to.
Página 95
... mirror of glass or highly - polished metal plate . The light falling from a candle on the surface of a looking - glass is almost entirely reflected , and is sent back from the glass to the eye , so that an image of the candle is seen ...
... mirror of glass or highly - polished metal plate . The light falling from a candle on the surface of a looking - glass is almost entirely reflected , and is sent back from the glass to the eye , so that an image of the candle is seen ...
Página 103
... mirror shall be equal . For this to be done , the distance of the greater lights from the mirror must be greater than the dis- tance of the lesser light . When I have arranged the lights so that their images in the mirror are of equal ...
... mirror shall be equal . For this to be done , the distance of the greater lights from the mirror must be greater than the dis- tance of the lesser light . When I have arranged the lights so that their images in the mirror are of equal ...
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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.