Annual Report of the Board of Regents of the Smithsonian InstitutionThe Institution, 1921 |
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Сторінка 177
... wireless telegraphy has been a practical accomplishment . This delay in the successful utilization of wireless telephony is due to certain differences in the fundamental requirements as compared with those for the telegraph . These ...
... wireless telegraphy has been a practical accomplishment . This delay in the successful utilization of wireless telephony is due to certain differences in the fundamental requirements as compared with those for the telegraph . These ...
Сторінка 180
... wireless telephone apparatus . As a result of these experiments , the transmission of speech from Washington , D. C. , to Paris and Honolulu by wireless telephone oc- curred during the year 1915. In these experiments the vacuum tube was ...
... wireless telephone apparatus . As a result of these experiments , the transmission of speech from Washington , D. C. , to Paris and Honolulu by wireless telephone oc- curred during the year 1915. In these experiments the vacuum tube was ...
Сторінка 191
... Wireless telephony between ships at sea or between a ship and a shore station is a logical supplement to the wireless telegraph service now furnished on practically all ocean - going steamships . In this case , as in the case of ...
... Wireless telephony between ships at sea or between a ship and a shore station is a logical supplement to the wireless telegraph service now furnished on practically all ocean - going steamships . In this case , as in the case of ...
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Bureau of American Ethnology | 17 |
Report on the United States National Museum | 25 |
EXECUTIVE COMMITTEE AND REGENTS | 100 |
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