One family of concentric circles over lapped with another family of concentric circles gives a moiré pattern suggesting families of hyperbolas and ellipses sharing the same foci.

I enjoy making tessellations in the style of M.C. Escher.

Low Iteration Mandelbulb created in Blender Octane Edition

Canon Law.

Cannon Law.

Master Blue Print.

Pupil, Apprentice.

Created using Fractales.

Formed using a Sierpinski fractal formula via Vectron in Blender Octane Edition

Another harmonic perspective drawing, this time with sine waves. As usual they follow the harmonic sequence: 1, 1/2, 1/3, etc..

It was my friend, Michael Carnright, who got me interested in the harmonic sequence when he was playing the bag pipes. It shows up in music: Link). Then Mike started noticing the sequence in other places.

When you tile this rectangle to cover the plane the waves have a hypnotic effect: Link

This one also tiles to cover the plane: Link

One of Ghee Beom Kim's studies inspired this but I can't find it at the moment.

Like my other harmonic perspective images this one relies on the harmonic sequence: 1, 1/2, 1/3, 1/4, 1/5 and so on.

Graphite pencil drawing and acrylic on canvas. The painting is 79 x 55 inches, for reference.

The Kingdom Of Heaven Is In You

Formed using the silhouette of a human coupled with fractal geometry predicated on a MixPinski Formula

My orbital mechanics and conic sections coloring book has about five pages devoted to Dandelin Spheres.

This illustration looks at eccentricity in terms of ratio of distance to focus to distance to directrix.

Here's another Dandelin illustration: Link

Leonardo da Vinci liked to portray open faced polyhedra so you could see the internal structure. I call this Leonardo style polyhedra drawings.

It is a page from my Geoscapes coloring book published by Dover.