Graham's Law ·
rate ∝ 1/√M
un
seel
.com · effusion · light gas escapes faster · kinetic theory
He escaped
0
SF₆ escaped
0
phase
—
Helium · M = 4 (light & fast)
SF₆ · M = 146 (heavy & slow)
Pinhole (hole ≪ mean free path)
Vacuum — molecules stream out
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.com · Graham's Law of Effusion