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It is to this rapid alternation of currents that - according to Maxwell— light waves are produced in the ether , and by induction these waves travel through space . The vibrations of sound are longitudinal , but those of light are ...
It is to this rapid alternation of currents that - according to Maxwell— light waves are produced in the ether , and by induction these waves travel through space . The vibrations of sound are longitudinal , but those of light are ...
Página 17
velocity of the electrical disturbance along a wire , and finds it to be about 186,000 miles a second , or practically the same as that of light , thus demonstrating the correctness of Maxwell's theory . It seems , then , very probable ...
velocity of the electrical disturbance along a wire , and finds it to be about 186,000 miles a second , or practically the same as that of light , thus demonstrating the correctness of Maxwell's theory . It seems , then , very probable ...
Página 21
Now , measurements with photometers of the same star at different altitudes above the horizon have shown that the absorption of light by the earth's atmosphere amounts in the case of a star in the zenith to only about a quarter of a ...
Now , measurements with photometers of the same star at different altitudes above the horizon have shown that the absorption of light by the earth's atmosphere amounts in the case of a star in the zenith to only about a quarter of a ...
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Naples Low Life in as pictured by Neapolitans By Lily | 84 |
its Growth and Evolution By Percy Fitz | 208 |
Points about Speakers By JAMES SYKES | 219 |
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