3.4 Scalar fields in higher dimensions
3.4.1 Locality, uniformity, and isotropy
3.4.2 Can you hear the shape of a drum?
3.4.3 Normal modes with a rectangular frame
3.4.4 Radial Laplacian on a circle
3.4.5 Circularly symmetric normal modes
3.4.6 Planar and circular travelling waves
Recap
(Combined notes for lecture 12)
Exercises: