Nature, Količina 104Sir Norman Lockyer Macmillan Journals Limited, 1919 |
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Stran 173
... wireless stimulation was to be tested , not merely by the responsive movement of sensitive plants , but also by diverse modes of response given by all kinds of plants . The Wireless System . For sending wireless signals I had to ...
... wireless stimulation was to be tested , not merely by the responsive movement of sensitive plants , but also by diverse modes of response given by all kinds of plants . The Wireless System . For sending wireless signals I had to ...
Stran 241
... Wireless telegraphy has attracted the attention of electricians since 1842 , but no important inven- tion was made until Marconi in 1896 first showed how to employ electromagnetic waves for this purpose , generated by a special form of ...
... Wireless telegraphy has attracted the attention of electricians since 1842 , but no important inven- tion was made until Marconi in 1896 first showed how to employ electromagnetic waves for this purpose , generated by a special form of ...
Stran 392
... wireless tele- graphy . The only difference is that , whereas the length of the waves used in wireless telegraphy is a matter of hundreds or thousands of metres , the wave- length in the case of solar radiation is only a very minute ...
... wireless tele- graphy . The only difference is that , whereas the length of the waves used in wireless telegraphy is a matter of hundreds or thousands of metres , the wave- length in the case of solar radiation is only a very minute ...
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