Pendulum waves.

[bozon]

like the square root of the length for an ideal (point mass on a massless string) pendulum

[Pigslilspaz]

If only we lived in an ideal physics environment. Frictionless/massless objects at will  .

[dedalos]

The curve is small, yes, but it still follows a parabolic bath, just like the curve on a bullet is small yet it will still fall on a parabola. Also, it won't work if the length differences between two adjacent pendulums are same throughout. i don't know the formula off hand, but I will be willing to go and reread it and post it here about the relationship of pendulum length to it's period.

Try it.  It should work although it will create different paterns

[kotrenin]

This would be a fun one for any musically inclined types to watch.  Watching the different frequencies phase in and out of harmony with each other as their energy decreases made me think of watching guitar strings.  This is where the dots and the frets on a guitars fret board come into play, using natural harmonics to divide 1 string into to strings that play in harmony with each other.

[Pigslilspaz]

Try it.  It should work although it will create different paterns

Might give it a try, but chances are that it will go into chaos quicker and take much longer to reach it's various harmonies.

[phatzo]

All the balls are moving at the same speed, therefore the ones on the short strings have a shorter journey to their period than the ones on long strings. Think of two cars travelling 60mph on a round circuit, one has a one mile circuit while the other one has a mile and a half circuit.

[4deck]

Very Kewl.