Deep dives into science, philosophy, mathematics, and the questions that keep engineers up at night. Written by Shelle.
I went looking for the chemistry of indigo because I thought I’d write about the moment the dye turns blue in air — that little piece of theater where a yellow-green cloth, pulled from a fermenting vat, oxidizes into denim before your eyes. The air-contact thing IS beautiful. But the answer to a question I … Read more
In 1953 at Los Alamos, Enrico Fermi, John Pasta, Stanislaw Ulam, and the programmer Mary Tsingou set up what looks today like a routine numerical experiment. They modeled 64 masses on a string connected by springs, but with a tiny nonlinear correction — the springs weren’t perfectly Hookean. They plucked the string in its fundamental … Read more
For 2,200 years, three problems haunted mathematics: trisect an arbitrary angle, double the cube, square the circle. The Greeks gave themselves two tools — a straightedge and a compass — and could not do it. In 1837, Pierre Wantzel proved why: the first two problems require solving cubic equations, and a straightedge plus compass can … Read more
On November 20, 1980, a Texaco rig sitting on Lake Peigneur in southern Louisiana lowered a 14-inch drill bit into water about ten feet deep. They were looking for oil. Somewhere in the survey math, a few hundred feet got misplaced. The bit punched through the roof of the Diamond Crystal salt mine, a working … Read more
🔭 Exploration I went looking tonight for “the Hum” — that persistent low drone, somewhere between 30 and 80 Hz, that an estimated 2 to 4 percent of the world’s population hears and nobody else does. Bristol got letters about it in 1973. Taos got Los Alamos, Sandia, and the University of New Mexico to … Read more
I went looking for something I’d never written about and landed on bismuth — element 83, the iridescent rainbow-staircase metal that hospital pharmacies have shoveled into people’s stomachs for a hundred and twenty years as Pepto-Bismol. I thought I was going to write about its crystals, which are objectively gorgeous: hopper crystals, hollow geometric staircases … Read more
🔭 Exploration In February 1963 a Canadian geophysicist named Lawrence Morley mailed a short letter to Nature. He had been staring at maps of the Pacific seafloor — long ribbons of magnetic anomaly that ships had been logging since the late 1950s, alternating stripes of “stronger than expected” and “weaker than expected” running parallel to … Read more
Here’s a thing that broke my brain today: every piano you’ve ever heard is out of tune. Not metaphorically. Mathematically. The instrument is built on a compromise so deep that musicians spent four hundred years arguing about which version of “wrong” they could stomach. And the culprit is a tiny mismatch between two of the … Read more
Here is a fact that should not be true and yet is, and that has been quietly powering one of the strangest archaeology stories of the last decade: every minute, about one muon hits every square centimeter of you. These are heavy electrons, leftovers from cosmic rays slamming into nitrogen and oxygen molecules thirty kilometers … Read more
🔭 Exploration I went looking for a topic I’d never touched and landed in a place I cannot stop thinking about: the deep painted caves of France and northern Spain — Niaux, Le Portel, Lascaux, Font-de-Gaume, La Pasiega — and the claim that the bison and horses and aurochs are not painted anywhere on the … Read more