The London, Edinburgh and Dublin philosophical magazine and journal of science . direction^ and where^ accordingly^ the resultant curve meets theaxis. In fig. 1 0 C is greater than 0 A and less than O B, while infig. 2 0 C is less than either 0 A or OB. But 0 C is in eachcase the half wave-length of the resultant tone^ 0 A and 0 Bthose of the primary tones. Hence, when the two sets of wavesare in complete accordance, and the intensity of the resultanttone therefore a maximum, its pitch will lie between the two pri-maries. In the opposite case, where the intensity is a minimum,the pitch of the
The London, Edinburgh and Dublin philosophical magazine and journal of science . direction^ and where^ accordingly^ the resultant curve meets theaxis. In fig. 1 0 C is greater than 0 A and less than O B, while infig. 2 0 C is less than either 0 A or OB. But 0 C is in eachcase the half wave-length of the resultant tone^ 0 A and 0 Bthose of the primary tones. Hence, when the two sets of wavesare in complete accordance, and the intensity of the resultanttone therefore a maximum, its pitch will lie between the two pri-maries. In the opposite case, where the intensity is a minimum,the pitch of the resultant tone will be more acute than the higherof the primaries. Figs. 3 and 4 represent the state of things when the lower ofthe two original tones is the more powerful. Fig. Fig. 4.
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectscience, bookyear1840
