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4. dio - grdelin

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Odnosno:<br />

( ) ∂S<br />

(<br />

∂N<br />

) ∂S<br />

∂U<br />

U,V<br />

N,V<br />

= − µ T = αk B<br />

= + 1 T = βk B<br />

⎫<br />

⎪⎬<br />

⎪⎭<br />

⇒<br />

α = − µ<br />

k B T<br />

β = + 1<br />

k B T<br />

Dokaz je isti za sve tri raspodjele!<br />

Napomena: Kemijski potencijal µ je energija potrebna da se čestica<br />

dovede u sustav. On se treba odrediti iz uvjeta da je ukupni broj čestica<br />

jednak N:<br />

∑<br />

i<br />

N i = ∑ i<br />

g i<br />

e E i −µ<br />

k BT ±1<br />

= N.

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