. Machinery and processes of the industrial arts, and apparatus of the exact sciences. Manometric Flames—the tonic and the major third. appearance presented when the tubes employed give the fundamentaland the major third, having the harmonic relation of five to four. One of the most interesting of the instruments exhibited by , was his Clang-Analyser, an instrument designed to demon-strate visibly the presence of harmonic overtones in all musical i A 514 PARIS UNIVERSAL EXPOSITION. This is composed of a series of resonators, eight in number, adapted toa series of tones beginn
. Machinery and processes of the industrial arts, and apparatus of the exact sciences. Manometric Flames—the tonic and the major third. appearance presented when the tubes employed give the fundamentaland the major third, having the harmonic relation of five to four. One of the most interesting of the instruments exhibited by , was his Clang-Analyser, an instrument designed to demon-strate visibly the presence of harmonic overtones in all musical i A 514 PARIS UNIVERSAL EXPOSITION. This is composed of a series of resonators, eight in number, adapted toa series of tones beginning with. C°, or C below the treble clef, andembracing the octave, the twelfth, the fifteenth, the seventeenth, thenineteenth and the twenty-second. These resonators are arranged oneabove another, as shown in the figure, opening all in a common direc- Fig. Kcenigs Clang-Analyser. tion. A caoutchouc tube from the opposite extremity of each is con-ducted to a separate manometric chamber, having a gas jet gas jets are all arranged in a straight line, and parallel to them amirror (four mirrors, in fact, forming a quadrangular solid) is mountedupon an axis, round which it is made to revolve rapidly by means of acrank and gear-work. The use of this apparatus hardly requires to beexplained. When a musical note is sounded while the mirror is in rev-olution, all the tones contained in the clang will be immediately detectedby the breaking up of the corresponding flames; while the absence ofothers will be equally demonstrated by the fact that their flames appeariu the mirror as continuous unbroken luminous bands. Besides the instruments above described. Mr. Keenig exhibited Helm-holtzs apparatus for demonstrating the different acoustic characters ofthe vowels as uttered by the human voice ; which he has shown to resultfrom the unequal
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Keywords: ., bookcentury1800, booksubjectmachinery, booksubjectscientificappa
