# Gwybodaeth Modiwlau

Module Identifier
PH31510
Module Title
Thermal Physics 2
2013/2014
Co-ordinator
Semester
Intended for use in future years
Pre-Requisite
Core Physics Modules at Levels 1 & 2
Other Staff

#### Course Delivery

Delivery Type Delivery length / details
Lecture 20 x 1-hour lectures and examples classes
Seminars / Tutorials

#### Assessment

Assessment Type Assessment length / details Proportion
Semester Exam 2 Hours   : Written examination  80%
Semester Assessment 2 Examples sheets  20%
Supplementary Exam 2 Hours   : Written examination  100%

### Learning Outcomes

After taking this module students should be able to:

• describe such ideas as phase changes.
• describe low temperature phenomena from a macroscopic and microscopic point of view.
• explain the basic concepts of statistical mechanics and their application to investigate the properties of matter.

### Brief description

This module aims to:
a) build on the introductory thermodynamics course, introducing such ideas as phase changes.
b) introduce phenomena that occur at low temperatures, and explain these from both a macroscopic and a microscopic point of view.
c) introduce the concepts of statistical mechanics, and use these to investigate the properties of matter.

### Content

THERMODYNAMICS
Thermodynamic potential - internal energy U, enthalpy H, Helmholtz function F and Gibbs function G and their physical significance.
The Maxwell relations.
Derivation of general thermodynamic relations for pure substances.
Phase transitions - first order and higher order transitions.
The attainment of absolute zero temperature.
• Liquefaction of gases (Joule-Kelvin effect)
• Adiabatic paramagnetic and nuclear demagnetisation
• the Third Law of Thermodynamics - the unattainability of absolute zero
• Liquid helium and superfluidity Superconductivity. Conventional superconductors and the BCS theory. Survey high Tc superconductors.
STATISTICAL MECHANICS
• Assembly of distinguishable particles: Boltzmann distribution, Partition function, link to thermodynamic quantities, examples
• Assembly of indistinguishable particles (gases): Fermi-Dirac and Bose-Einstein distributions, Maxwell-Boltzmann distribution, examples