a friend of mine is playing violin, and she explained to me that she can hear if she plays a false note because the string doesn't resonate well
i find it very counter intuitive based on what i know of physics and harmonics (very few actually), i would have think that when she pull the string at one point, it "creates" a new string, shorter than the whole one, and with it's own harmonics. So, whatever the size of this substring is, it should sound well (I'm not speaking relatively to the other notes of the music, but the note on its own)
instead, she showed me that if she pull a random point on the chord, and play the string, when we listen carefully we can hear the sound beeing kind of empty, or rough (sorry i never speak of music in english, i don't have the vocabulary). Instead, when she plays one of the notes of the tonality, the string sounds better, it's like there are more harmonics in it
how is it possible ? it's an electric violin so it has little or nothing to do with the "box". Does that means that you cannot tune your violin to whatever tonality you want ? like instead of a C, you would want something a quarter tone above, it would sound bad ?