Why are harps narrow at one end and wide at the other?
454208
the diffrent lenghts in strings make diffrent pitches, the diffrent length is the same as pressign down on a fret on a guitar, shorting the string makes it vibrate at a differnt speed creatign a diffret pitch
852815
Probably because they are round and keep moving, bumping into each other. Confusing is; when they bang together, pieces never fall off OR they get smaller with friction.
436127
depends on what you want to do with the sound, but generally they use geometry to create sound friendly environments. (feedback reduction,  good resonance reverb, noise reduction, and others)
76952
Actually thier is just one continous groove.  If their was more then one the needle would skip.
310148
D'Addario strings have different coloured ends
373537
will work just a little narrower
388065
This is due to the doppler radar effect.  The wavelength of the reflected sound waves from an object travelling toward you is short (blueshift) whereas the wavelength from a receding object is long (redshift)
628725
Gravity also curves the instruments. The reason that we dont notice this are many. One is that Since we are part of this very space time and that we refer to the curved spacetime to check the curveness of the instrument are the prime reasons
177517
The frets are the spaces between the bars on the neck.
366583
This is because of their centre of gravity.\n\nAll of their constituent mass is  pulled with an even force into the centre of the object....thus the surface of the celestial body is equidistant from the centre...ie. almost spherical.\n\nMany are in fact oval due to the fact that they spin around. This moves some of the mass to the equator of the object....rightly due to centrifugal force.
565351
They are hand made from excellent and expensive wood.  The wood pieces must be structurally perfect in large sizes and are rare.  They take FAR longer to make than any other instrument.\n\nThe cheap plastic ones aren't that much more than other instruments.  Also, they are far less popular, so there is a volume/demand issue as well.
569388
Variety is the spice of life. I'm not really sure...maybe it's to make sure than one side isn't worn more than the other, easier to play/run on, and both are given a better chance at a fair game by doing so, not to mentio the ecological factors such as glare from the sun, and wind direction. That's totally a guess.
352137
if you are reading sheet music it has to do with a time signature. I the top number indicates how many beats are in each measure while the bottom means what type of note gets the beat. If you were refering to the size of a violin the sizes are 1/16 1/4 1/2 3/4 and4/4. A full size violin is 4/4 so a 1/2 violin is half the size of a full size.
1147399
A long skinny cylinder is the preferred shape for high pressures.  But if you have a cylinder and a sphere with the same diameter and wall thickness, the sphere will have a slightly smaller hoop stress because theoretically there is no "hoop" in a sphere since the diameter is never a constant over any width of cross section.
899943
Polyphonic...meaning you can play multiple keys at the same time.\nThe Moog was monophonic...you could only play one note at a time.\n(I happen to be one of the lucky 3000 people in the world that own a Mellotron)
458923
Wonderful! Another Harmonica Player! wooot!!! So, when I play Harmonica I can figure out what to play where in a song. Even if the Harmonica doesn't EXACTLY match up. I can just hear it. I would suggest find out the key that the song is in, and use the harmonica that is in that key...or even a harmonica a step lower MAY work (don't quote me on that though, I'm not completely sure). I'm a little sleepy now to really give you great advice on the Harmonica. I'm guessing you are the Harmonica player and this isn't asked for a friend or relative-and I think you should know that I am happy that there is another Harmonica player out there. :)\n\nTake care.
203111
Because of the timing of the waves traveling through the metal and the waves in the air. Each tuning fork is designed for the frequency at which it resonates. The timing of the arrival of the waves from one side to the other allows the metal to compress and extend in time with the waves. The only thing which slows the fork's vibrations significantly is the resistance of the air and the energy lost to broadcasting the sound.