A spherical harmonic pushes a sphere into lobes. Latitude contours describe its surface like topographic lines wrapped around a sculpture.
Real sectoral spherical harmonics · radial surfaces
The radial displacement is proportional to sin(θ)^m cos(mφ), a real sectoral spherical harmonic up to normalisation. Changing m changes the lobe count. All contours are sampled on the same radial surface; rear portions fade to reveal the volume.
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