Telephone Lines And Their Properties
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In our eReader you can find the full English version of the book. Read Telephone Lines And Their Properties Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Telephone Lines And Their Properties
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A method of easily obtaining the com- parative volumes of different sounds is by the use of the apparatus described below : This apparatus, as originally designed,* depended for its operation on the finding of the point of dis- appearance of the sound in a secondary coil as it was moved away from the coil carrying the current to be measured. Through a fixed coil, C, at one Iffl I I I! ] I I! M I I M I I I I I 1 i end of the balance, the current to be meas- ured was passed, i-i The movable coil,... D, was then moved away I from C, until the point was reached at which "=^ the sound just disap- peared ; and this position was read off on the graduated scale at the side. There are, obviously, many difficulties in the way of the practical use of such an instrument. The point of apparent disap- pearance of the sound will depend on the acute- ness of hearing of the observer, on the degree of quiet that could be obtained in the room, and there is a considerable range in which it is difficult to tell whether any sound is heard or not.
What to read after Telephone Lines And Their Properties?
You can find similar books in the "Read Also" column, or choose other free books by Hopkins William John to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
A method of easily obtaining the com- parative volumes of different sounds is by the use of the apparatus described below : This apparatus, as originally designed,* depended for its operation on the finding of the point of dis- appearance of the sound in a secondary coil as it was moved away from the coil carrying the current to be measured. Through a fixed coil, C, at one Iffl I I I! ] I I! M I I M I I I I I 1 i end of the balance, the current to be meas- ured was passed, i-i The movable coil,... D, was then moved away I from C, until the point was reached at which "=^ the sound just disap- peared ; and this position was read off on the graduated scale at the side. There are, obviously, many difficulties in the way of the practical use of such an instrument. The point of apparent disap- pearance of the sound will depend on the acute- ness of hearing of the observer, on the degree of quiet that could be obtained in the room, and there is a considerable range in which it is difficult to tell whether any sound is heard or not.
What to read after Telephone Lines And Their Properties?
You can find similar books in the "Read Also" column, or choose other free books by Hopkins William John to read onlineMoreLess
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