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Originally Posted by Back In The Saddle
I do buy the argument about different surfaces producing a different bounce.
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Since I only work games on hardwood basketball courts, this is irrelevant to me, personally. It might make some theoretical difference, but not to me.
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I also think that the relatively small mass of a volleyball would probably make for a much wider range of bounce heights, and allow significant variability based on the material and age of the ball.
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Being a non-physicist, this seems to me to admit of a fairly insignificant difference between balls.
And to a larger point, if 2 balls
can have the same air pressure and bounce to significantly different heights, that's a terrible situation. You play the first set with a ball that the kids get used to. Then it rolls under the bleachers and you play with another ball. It's perfectly legal, because it's the same air pressure as the first. But the first server hits it 20 feet out of bounds because the ball bounces significantly more, even with the same air pressure.
That's a ridiculous situation.