It isn't gravity which sorts the popped from the unpopped but rather

the physics of large and small. I have forgotten the technical name

for this. It explains why tires pop to the surface in landfills

(which do vibrate) or why any larger item should shake to the top of

a mixed sizes conglomerate.

Try it by mixing whole bean and cheaper already ground coffee (this

is a compromise between flavor and cost)— be sure to add the beans

first then the ground coffee. Shake. Beans rise to surface.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M. Pamela Bumsted, Ph.D.

PO Box 1951, Bethel, Alaska 99559 USA

telephone (907) 543-4146

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