This section contains notes on some miscellaneous scientific matters.

- Ball Bearings in a Hypersphere
^{ } - Catacaustics, Resultants and Kissing Conics
^{ } - Resonant Modes of a Conical Cavity
^{ } - A Simple Asymmetric Resonant Cavity
^{ } - Conic Section Orbits
^{ } - Dihedral Angles
^{ } - The Ellipse and the Atom
^{ } - The Finite Fall
^{ } - General Relativity in 2+1 dimensions
^{ }- Basic concepts
^{ } - Multi-particle systems
^{ } - Collisions
^{ }

- Basic concepts
- Null Rotations in 2+1 dimensions
^{ } - Klein’s Quartic Curve
^{ } - Klein’s Quartic Equation
^{ } - Light Mill applet
^{* } - Hot Plate applet
^{* } - Light Mill results
^{ } - Hot Plate results
^{ } - Littlewood applet
^{* }- Screenshots
^{ }

- Screenshots
- Littlewood videos
^{ } - There Are No Corkscrew Orbits
^{ } - Ordered Sums
^{ } - Optimised Origami
^{ } - Weak-field GR near a planar mass
^{ } - Polar Orbits Around Binary Stars
^{ }- References
^{ }

- References
- The Rindler Horizon
^{ } - Relativistic Elasticity
^{ } - Rotating Elastic Rings, Disks and Hoops
^{ } - Newtonian Hoop applet
^{* } - Steffen’s Polyhedron
^{ } - Exact values of regular 10
*j*symbols^{ }

Other scientific topics are discussed in the sections of this web site relating to particular works of science fiction, in the notes for some of my Java applets, and in four essays I wrote on the Foundations of modern physics.