The Technical World Magazine, Volume 9Technical World Company, 1908 |
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Page 37
... possible to send a wireless message twice the distance by night than it is by day . It is impossible to send a message through the air at sunrise and sunset , on account of the weakness of the Hertzian wave at these times . It is easier ...
... possible to send a wireless message twice the distance by night than it is by day . It is impossible to send a message through the air at sunrise and sunset , on account of the weakness of the Hertzian wave at these times . It is easier ...
Page 42
... possible to revolve the typewheel at a very rapid rate of speed . Once a key is depressed to form a letter , it is not released until the letter has been printed and none of the other keys may be de- pressed until the last letter struck ...
... possible to revolve the typewheel at a very rapid rate of speed . Once a key is depressed to form a letter , it is not released until the letter has been printed and none of the other keys may be de- pressed until the last letter struck ...
Page 173
... possible for M. Knap to talk with anyone in the house , or even in the garage or stable outside . In a similar way , he may , when he desires , hear , with complete distinct- ness , anything that is said or any noise made anywhere ...
... possible for M. Knap to talk with anyone in the house , or even in the garage or stable outside . In a similar way , he may , when he desires , hear , with complete distinct- ness , anything that is said or any noise made anywhere ...
Contents
Testing Seeds for the Farm W | 11 |
TABLE | 13 |
First Balloon Flight Across Central Alps | 23 |
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acres American apparatus balloon boat brick building built cactus carried cent Chicago clock color construction cost Crater lake cylinder electric engine fact farm feet fire four frogs glass guayule heat horse horse-power hour Hudson Bay hundred ical Illinois rivers inches invention iron Knight's Key lake lamp land larvæ light liquid air machine magnet manufacture means meerschaum ment method miles minute motor operation ordinary pass Pennywise photograph pills pipe plant plate pounds pressure produced pump radium rail railroad railway river road Ruhla sand seed ship side slide rule speed station steam steel street supply surface tank TECHNICAL WORLD MAGAZINE telegraphy thousand tical tion tons track trains trees tube turn twenty UNDERWOOD & UNDERWOOD vessel waterway weight wheels wire wireless wireless telegraph York