No. 10

Fresnel's Wave surface is one of the most classical algebraic surfaces. The first image is a look 'inside' the surface which shows its full structure and beauty - it is a quartic derived from an ellipsoid (cf. e.g. the great book of Salmon/Fiedler). The second image shows both the wave surface (red) and another real view of it (white).

The wave surface (red) together with another real view of it (white). The white view shows 12 of the 16 nodes (the remaining 4 are complex), whereas the standard real view of the surface only shows 4 of the nodes:

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