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Hansen solubility parameters were developed by Charles M. Hansen in his Ph.D thesis in 1967 [1] [2] as a way of predicting if one material will dissolve in another and form a solution. [3] They are based on the idea that like dissolves like where one molecule is defined as being 'like' another if it bonds to itself in a similar way.
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The xylophone (from Ancient Greek ξύλον (xúlon) 'wood' and φωνή (phōnḗ) 'sound, voice'; [1] [2] lit. ' sound of wood ' ) is a musical instrument in the percussion family that consists of wooden bars struck by mallets .
LRAD 1000Xi Long Range Acoustic Device [20] 1 m 8.93×10 2: 153 9-inch (23 cm) party balloon inflated to rupture [19] 1 m 731 151 Jet engine [13] 1 m 632 150 9-inch (23 cm) diameter balloon crushed to rupture [19] 0.95 m 448 147 9-inch (23 cm) diameter balloon popped with a pin [19] 1 m 282.5 143 Loudest human voice [21] 1 inch 110 135 Trumpet ...
Xylorimba, range C3-C8. The xylorimba (sometimes referred to as xylo-marimba or marimba-xylophone) is a pitched percussion instrument similar to an extended-range xylophone with a range identical to some 5-octave celestas or 5-octave marimbas, though typically an octave higher than the latter.
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The primary function of the thumbhole is to serve as an octaving vent. When it is leaked, the first mode of vibration of the air column becomes unstable: i.e., the register changes. In most recorders, this is required for the playing of every note higher than a ninth above the lowest note.