I made my computer draw it!!
Sierpinski tetrahedron, colored to show depth.
These are cross-sections of the first four iterations of the Sierpinski tetrahedron. The last picture is the whole 3D Sierpinski tetrahedron, color coded to show which little tetrahedra share the same cross-section.





Visualizing Prime Numbers
Jason Davies has created a way to visualize prime numbers as periodic curves (curves that repeat every n points). Wherever only two curves intersect (for 1 and the number), that’s a prime.
Play with the interactive, zoomable version here. Awesome stuff!
I’m such a happy wave!!