British Almanac and CompanionStationers' Company, 1879 |
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23. oldal
... sounds , and especially the articulated sounds of the human voice , to great distances — dis- tances measured by tens or hundreds of miles . Many inventive brains had been at work long before Professor Graham Bell took up the subject ...
... sounds , and especially the articulated sounds of the human voice , to great distances — dis- tances measured by tens or hundreds of miles . Many inventive brains had been at work long before Professor Graham Bell took up the subject ...
24. oldal
... sounds to a limited distance ; he has also employed reeds and strings instead of tuning forks . Mr. Gower has ... sounds , and only one note of musical sounds , there was , nevertheless , much in Reiss's invention that suggested ideas to ...
... sounds to a limited distance ; he has also employed reeds and strings instead of tuning forks . Mr. Gower has ... sounds , and only one note of musical sounds , there was , nevertheless , much in Reiss's invention that suggested ideas to ...
34. oldal
... sounds and movements of the pulse and heart . May it not to some degree lessen the social disadvantages of the deaf and dumb ? May it , not be possible to make molecular motion audible ; to hear minute vibrations in a mass of heated ...
... sounds and movements of the pulse and heart . May it not to some degree lessen the social disadvantages of the deaf and dumb ? May it , not be possible to make molecular motion audible ; to hear minute vibrations in a mass of heated ...
Tartalomjegyzék
Abstracts of Important Acts of Parliament | 1 |
Abstracts of Parliamentary and other Official Documents | 238 |
Chronicle of Events and Occurrences 187778 | 279 |
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