. An elementary manual of radiotelegraphy and radiotelephony for students and operators . Simple Form of 66 Sound as in Coo. I » ♦ I • I I M I M •» •» •» •! 4 4 •» 4 4 4 4 •• 4 4 » S 4 1 Complex Form of 60 Sound as in Vowel 6 as iu Ho. Vuwol e as in Me. ,*^^vmA^;Wv\.;.. i»t permUsion/nm - tU FnoteiUngt •/ Uu Hayai iHtuluUan 0/ Cr«*< tfrUdm. 1»05 Fig. 2.—Oscilloprams or Wave Forms of various Sounds taken with theOscillograph by Mr. W. DuddoU, 332 RADIO TELEGRA PH V aud substitute for it a train of electromagnetic waves passingthrough space. Hence the particular inventions
. An elementary manual of radiotelegraphy and radiotelephony for students and operators . Simple Form of 66 Sound as in Coo. I » ♦ I • I I M I M •» •» •» •! 4 4 •» 4 4 4 4 •• 4 4 » S 4 1 Complex Form of 60 Sound as in Vowel 6 as iu Ho. Vuwol e as in Me. ,*^^vmA^;Wv\.;.. i»t permUsion/nm - tU FnoteiUngt •/ Uu Hayai iHtuluUan 0/ Cr«*< tfrUdm. 1»05 Fig. 2.—Oscilloprams or Wave Forms of various Sounds taken with theOscillograph by Mr. W. DuddoU, 332 RADIO TELEGRA PH V aud substitute for it a train of electromagnetic waves passingthrough space. Hence the particular inventions required in orderto accomplish the desired result, as regards the transmitter, are todevise a mechanism capable of emitting undamped electromagneticwaves and to vary the amplitude of these waves in accordance withthe variations in the air pressure taking place against the trans-mitting diaphragm, and at the receiving end to cause theseundamped waves of variable amplitude to actuate a mechanismwhich shall cause them to set in vibration the receiving diaphragm,so that its displacements correspond with the variations in theamplitude of the electromagnetic waves. AVe have therefore to consider (1st) the transmitt
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1916
