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Conduction
9
their momenta, on the instant, and thus displace momentum and energy by instantaneous conduction.
This displacement by instantaneous conduction may be illustrated on billiard-tables; for when one ball strikes another at rest, if in the same line, the first stops while the other takes up its motion a full diameter in front, whence the instantaneous displacement of momentum and energy.
The arrangement, or piling, of the grains, is
Fig 1.
