Sunrise, sunset Published on January 27, 2026January 26, 2026 by fivecolorssandt@icloud.com In-between calculations In the twilight land of Spherical Astronomy. . . Read More
Out of our element Published on November 18, 2025November 17, 2025 by fivecolorssandt@icloud.com Space is dangerous There are lots of ways for things to go wrong off-Earth. Read More
A cross-boundary class Published on August 26, 2025August 25, 2025 by fivecolorssandt@icloud.com Doomed ideas (II) We present another project that almost certainly won’t happen. Read More
The synthesis project Published on August 19, 2025August 17, 2025 by fivecolorssandt@icloud.com Doomed ideas (I) We present something that almost certainly won’t happen. Read More
What if. . .? Published on July 8, 2025July 7, 2025 by fivecolorssandt@icloud.com Counterfactuals Asking about what might have been can be useful, but is often just a waste of time. Read More
The good stuff Published on May 6, 2025May 5, 2025 by fivecolorssandt@icloud.com Tucked away at the end Sometimes classes never reach the more interesting parts of Physics. Read More
Small perturbations Published on April 15, 2025April 14, 2025 by fivecolorssandt@icloud.com A big subject We describe how to do something that’s hard. Read More
Time is against us Published on March 18, 2025March 16, 2025 by fivecolorssandt@icloud.com Human scales The universe is often an obstacle to science fiction. Read More
But first- Published on November 12, 2024November 10, 2024 by fivecolorssandt@icloud.com The two-step problem We identify a major block to productivity. Read More
A changing syllabus Published on November 5, 2024November 4, 2024 by fivecolorssandt@icloud.com What to learn “Quantum Mechanics” is not what it used to be. Read More