 He succeeded in obtaining photographs of the curves on the wax cylinder, a beam of light reflected from a small mirror attached to the vibrating disc of the phonograph being allowed to fall on a sensitive plate while the phonograph was slowly travelling.  Proceedings of the Royal Society of Edinburgh - Page 80by Royal Society of Edinburgh - 1900Full view - About this book
 | Sir Norman Lockyer - 1902 - 1074 pages
...year. The subject was taken up by Hermann '' about 1890, and he obtained valuable tracings by using the wax-cylinder phonograph. He succeeded in obtaining...reflected from a small mirror attached 'to the vibrating disc of the phonograph being allowed to fall on a sensitive plate while the phonograph was slowly travelling.... | |
 | Sir Norman Lockyer - 1902 - 688 pages
...year. The subject was taken up by Hermann3 about 1890, and he obtained valuable tracings by using the wax-cylinder phonograph. He succeeded in obtaining...reflected from a small mirror attached to the vibrating disc of the phonograph being allowed to fall on a sensitive plate while the phonograph was slowly travelling.... | |
 | Sir Norman Lockyer - 1897 - 900 pages
...taken up by Hermann, and he succeeded in obtaining photographs of the vibrations of the vowel sounds, a beam of light reflected from a small mirror attached to the vibrating disc of the phonograph being allowed to fall on a sensitive plate while the phonograph was slowly travelling.... | |
 | 1882 - 966 pages
...Instrument in which the deflections of the needle are mulI tiplicd to any desired extent by meant) of a beam of light, reflected from a small mirror attached to the needle, which is received upon a screen. The novel feature of Professor Mayer's demonstration consisted... | |
 | John Gray - 1890 - 304 pages
...deflection of the needle will be proportional to the difference of potential, and may be shown on a scale by a beam of light reflected from a small mirror attached to the axis of the needle. The needle is kept at a constant potential by means of a small influence machine... | |
 | 1895 - 708 pages
...Konigsberg, and he succeeded in obtaining photographs of the vibrations produced by the vowel sounds, a beam of light reflected from a small mirror attached...the phonograph being allowed to fall on a sensitive photograph film while the phonograph was slowly travelling. 1 The curves thus obtained were very beautiful,... | |
 | Royal Philosophical Society of Glasgow - 1897 - 388 pages
...taken up by Hermann, J and he succeeded in obtaining photographs of the vibrations of the rowel sounds, a beam of light reflected from a small mirror attached to the vibrating disc of the phonograph being allowed to fall on a sensitive plate while the phonograph was slowly travelling.... | |
 | John Gray McKendrick - 1897 - 56 pages
...taken up by Hermann,* and he succeeded in obtaining photographs of the vibrations of the rowel sounds, a beam of light reflected from a small mirror attached to the vibrating disc of the phonograph being allowed to fall on a sensitive plate while the phonograph was slowly travelling.... | |
 | International Correspondence Schools - 1899 - 944 pages
...tangent galvanometer be suspended by a fiber of raw silk or other similar material without twist, and if a beam of light reflected from a small mirror attached to the needle be used for a pointer, very accurate measurements of the deflection can be obtained. An instrument... | |
 | Philosophical Society of Aberdeen - 1900 - 284 pages
...partials. While experimentally it may be shown that a constant cavity may produce a vowel-like tone, say 0, over a wide range of pitch, it is probable that the...reflected from a small mirror attached to the vibrating disc of the phonograph being allowed to fall on a sensitive plate while the phonograph was slowly travelling.... | |
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