The theoretical piston Published on August 22, 2023August 20, 2023 by fivecolorssandt@icloud.com A useful idea We ask a chicken-and-egg question about a textbook staple. Read More
A simpler theory (II) Published on July 11, 2023July 9, 2023 by fivecolorssandt@icloud.com Writing down the equation We notice how mathematical notation affects scientific progress. Read More
When there are two truths Published on September 21, 2021September 20, 2021 by fivecolorssandt@icloud.com Aristotle vs. Ptolemy We point out an uneasy tension beneath an apparent unity. Read More
The languages of science Published on June 1, 2021June 1, 2021 by fivecolorssandt@icloud.com Standardization and diversity Does it matter what words go with the mathematics? Read More
Learning from the Great Conjunction Published on January 26, 2021January 25, 2021 by fivecolorssandt@icloud.com A crucial experiment We investigate a possible event in ancient science. Read More
Four elements, four humors Published on December 1, 2020December 1, 2020 by fivecolorssandt@icloud.com Before the revolution We conclude that it can be useful to teach something that is actually wrong. Read More
Saving the phenomena Published on June 5, 2018June 1, 2018 by fivecolorssandt@icloud.com Fixed stars, part II The Middle Ages were a hotbed of astronomical controversy in Europe. Read More
The discard pile Published on May 22, 2018May 22, 2018 by fivecolorssandt@icloud.com It didn’t work out What is the use of scientific theories that aren’t right? Read More