11th harmonic.
According to this video, if you play the resonant frequency of a cancer cell and that same frequency 11 times higher (eleventh harmonic of that resonant frequency) then the cancer cells break. If this is true then the 11th harmonic of any similar object's resonant frequency should have a similar effect on that object.
This is quite amazing because musical ratios with 11 in them tend to sound horrible, 11 sided polygons or 11 as an amount of any polygon are also no good for building symmetrical 3D objects, and 11 also complicates certain mathematics which is why so many ancient cultures avoided it.
Skip to 8:50 in this video if you just want to hear about the 11th harmonic.
This is quite amazing because musical ratios with 11 in them tend to sound horrible, 11 sided polygons or 11 as an amount of any polygon are also no good for building symmetrical 3D objects, and 11 also complicates certain mathematics which is why so many ancient cultures avoided it.
Skip to 8:50 in this video if you just want to hear about the 11th harmonic.
528 Hz is the 11th harmonic of 48 Hz (48 x 11 = 528). In this audio you can hear how unpleasant this interval is.