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Physics 157: Thermodynamics, Oscillations, and Waves

author: Mark Van Raamsdonk (professor of physics at the University of British Columbia)

This page has links to a series of videos on the thermodynamics, oscillations, and waves originally designed for first year engineering students at UBC.


Topics Video

Introduction

Lecture 1 video 

What is thermodynamics? Energy conservation.
Effects of heating/cooling on macroscopic properties of objects.
IR radiation as a way to "see" microscopic energy.
Equilibrium, temperature, and heat.
Zeroth Law of Thermodynamics.  

Lecture 2 video

Thermometers and temperature scales.
The Celcius scale.
Definition of Pressure.
Gas thermometers and the ideal gas law.

The Kelvin scale.
Lecture 3 video

Linear relations vs proportionality relations.
Kelvin scale.
Thermometers.
Thermal expansion.
Lecture 4 video

More thermal expansion, area and volume expansion
Lecture 5 video
 
More on volume expansion, Young's modulus, stress, strain
Lecture 6 video

Thermal stress. Problems with thermal expansion and stress/strain in multipart systems

Lecture 7 video

Heat capacity, specific  heat.

Lecture 8 video

Phase diagrams, phase changes,  latent heat. Calorimetry.

Lecture 9 video

Heat conduction, thermal conductivity.
Lecture 10 video

More conductivity

Lecture 11 video

Insulation and R values. Convection and radiation. Electromagnetic waves, spectrum graphs.

Lecture 12 video

Temperature dependence of spectrum and power emitted for thermal radiation.
Emissivity, equilibrium temperature of radiating objects.
Lecture 13 video

The solar constant, albedo, temperature of the Earth, greenhouse effect.
Lecture 14 video

Molecular picture of forces from a gas. Ideal gas law.
Lecture 15 video
 
First law of thermodynamics. Work

Lecture 16 video

Work for gases, PV diagrams, Work as area on a PV diagram.
Internal energy.

Lecture 17 video

Internal energy.
Free expansion of gas. Calculating heat using the first law.

Lecture 18 video

Constant volume, constant pressure, constant temperature, and adiabatic processes.

Lecture 19 video

Review of isochoric, isobaric, isothermal, and adiabatic processes.
Adiabatic compression example.
Lecture 20 video

The internal combustion engine.
Example of calculating efficiency.

Lecture 21 video

The power of an engine.
Refrigerators.
Lecture 22 video

Refrigerators and air conditioners.
Why does heat flow from hot to cold?
Frogs and entropy.
Lecture 23 video

Entropy and the Second Law of Thermodynamics.
Relation between entropy, heat, and temperature.

Lecture 24 video

Entropy examples, TS diagrams, calculating efficiency from TS diagrams.
Carnot cycle and maximum possible efficiency.


Lecture 25 video

Mechanical equilibrium, restoring forces, oscillations, simple harmonic motion

Lecture 26 video

Simple harmonic motion, amplitude, period, angular frequency, velocity, acceleration, phase.

Lecture 27 video

Displacement/velocity/acceleration in simple harmonic motion

Lecture 28 video

Simple harmonic motion from small oscillations with non-linear forces.

Lecture 29 video

Energy in simple harmonic motion, damped oscillations.

Lecture 30 video

Drag forces, damped oscillations, driven periodic motion, resonance.

Lecture 31 video

Coupled oscillators, transverse and longitudinal waves, waves on stretched strings, in solids, and in fluids

Lecture 32 video

Mathematical description of traveling sinusoidal waves.
Wavelength, wave number. Relation between wave velocity, period, and wavelength.

Lecture 33 video

Principle of Superposition, standing waves,
wave velocity, constructive and destructive interference

Lecture 34 video

Applications: musical instruments and gravtational waves

Lecture 35 video