1)Draw two points. Draw eight curves that connect these two given points. Now, draw a curve between the two given points that is an average of the other eight. Measure the length of this last curve, using a ruler and a protractor. How much shorter or longer is the curve than the eight other added curves? Measure the angle of the tangent that corresponds to the new curve as a mean wave (if smooth), if going from one point toward another, at one locus of the given curve. This is a central state wave. Moving this wave describes a harmonic vibration.
2)Draw an ordinary rectangle. Make points along it. Now, make a point above a plane of scattered points.
Let's discuss the above.
3)In "2", which array is globally norm?
Which array is globally ground?
Which array implies point commutation?
Which array describes strings?
Do these ever interchange?
Why?
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