Elementary Treatise on the Wave-theory of LightLongman, Brown, Green, Longmans, and Roberts, 1857 - 208 من الصفحات |
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الصفحة vii
... propagated in right lines ; ray of light . ( 6 ) Intensity of light emanating from a luminous point varies inversely as square of distance . ( 7 , 8 ) Measure of illumination ; photometry . ( 9 , 10 ) Velocity of light determined by ...
... propagated in right lines ; ray of light . ( 6 ) Intensity of light emanating from a luminous point varies inversely as square of distance . ( 7 , 8 ) Measure of illumination ; photometry . ( 9 , 10 ) Velocity of light determined by ...
الصفحة 2
... homogeneous medium , light is propagated in right lines , whether it emanates directly from luminous bodies , or is reflected from such as are non - luminous . This is proved by the fact that when an opaque 2 PROPAGATION OF LIGHT .
... homogeneous medium , light is propagated in right lines , whether it emanates directly from luminous bodies , or is reflected from such as are non - luminous . This is proved by the fact that when an opaque 2 PROPAGATION OF LIGHT .
الصفحة 5
... propagated with a finite velocity . This important discovery was made in the year 1676 , by the Danish astronomer , Olaus Roemer . Roemer observed that when Jupiter was in opposition , and therefore nearest to the Earth , the eclipses ...
... propagated with a finite velocity . This important discovery was made in the year 1676 , by the Danish astronomer , Olaus Roemer . Roemer observed that when Jupiter was in opposition , and therefore nearest to the Earth , the eclipses ...
الصفحة 8
... propagated movement . Either it is the same individual body which is found in different times in distant parts of space ; -or there are a multitude of moving bodies , occupying the entire interval , each of which vibrates continually ...
... propagated movement . Either it is the same individual body which is found in different times in distant parts of space ; -or there are a multitude of moving bodies , occupying the entire interval , each of which vibrates continually ...
الصفحة 9
... propagated motion has been ap- plied to explain the phenomena of light ; and hence the two rival theories — the theory of emission and the wave - theory . In the former the luminous body is supposed to send forth , or emit , continually ...
... propagated motion has been ap- plied to explain the phenomena of light ; and hence the two rival theories — the theory of emission and the wave - theory . In the former the luminous body is supposed to send forth , or emit , continually ...
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