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squ per second is a respectable diff
diffusivity at room temperature most
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diffusivity at room temperature most
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diffusivity at room temperature most
materials you would never see that it's
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materials you would never see that it's
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materials you would never see that it's
not quite a fast diffuser yet where this
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not quite a fast diffuser yet where this
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not quite a fast diffuser yet where this
number will be more at 10 to- 11 10- 12
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number will be more at 10 to- 11 10- 12
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number will be more at 10 to- 11 10- 12
um and you take a jump length of one
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um and you take a jump length of one
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um and you take a jump length of one
angstrom so that's 10us 18 cm um then
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angstrom so that's 10us 18 cm um then
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angstrom so that's 10us 18 cm um then
you you can show that the jump rate is
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you you can show that the jump rate is
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you you can show that the jump rate is
about 100 per second
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about 100 per second
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about 100 per second
so if if you have a 10 14 diffusivity
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so if if you have a 10 14 diffusivity
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so if if you have a 10 14 diffusivity
an atom jumps about 100 times per second
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an atom jumps about 100 times per second
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an atom jumps about 100 times per second
or
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or
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or
about you know one times per 10
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about you know one times per 10
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about you know one times per 10
milliseconds