phy1004 thermal physics
phy1004 thermal physics
phy1004 thermal physics
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>phy1004</strong>W<br />
Thermal Physics<br />
IG-10<br />
Simplified model: Einstein (1907) model of a solid<br />
Assumptions:<br />
•Each atom in the lattice is a 3D quantum mechanical oscillator (based on<br />
Planck’s quantisation assumption)<br />
•Each atom moves independently (connected to imaginary rigid walls; not<br />
other atoms) No mechanism for energy exchange between atoms<br />
•All atoms vibrate with the same frequency<br />
•Ignore collective motion of groups of atoms<br />
<br />
0<br />
<br />
27
Change language