
May 2026
The Equations That Forgot They Were Equations
Alejandro Guijarro spent three years photographing quantum mechanics blackboards at Cambridge, Stanford, CERN, and Oxford. No staging. Just the board.
ReadLong reads — science, math, history, and the web worth your attention.

May 2026
Alejandro Guijarro spent three years photographing quantum mechanics blackboards at Cambridge, Stanford, CERN, and Oxford. No staging. Just the board.
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May 2026
In 1965, Magritte painted a woman on horseback through a forest. Everything is real. Nothing is possible. A 2023 study in the Journal of Vision finally explains exactly how he did it.
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May 2026
Erich Dieckmann's 1931 morphological matrix: 8 rows, 64 variations, from rigid geometry to near-abstraction. The clearest single-page argument for design research the Bauhaus produced.
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May 2026
In 1965, Feynman read 500 pounds of math textbooks and wrote the sharpest critique in the history of mathematics education. Sixty years later, the problem is still with us.
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Apr 2026
Written one year before its author died in the Mongol conquest of Khwarazm, al-Jaghmini's Mulakhkhas became the most widely copied Arabic astronomy textbook ever made.
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Apr 2026
Rafael Araujo spends 100 hours on a single drawing — no software, no undo. A selection of his most stunning hand-drawn golden ratio illustrations.
ReadApr 2026
It looks strange. It feels wrong. But 0.999… is not ‘almost 1’ — it is exactly 1. Here is the geometric series proof that settles the matter in five steps.
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Apr 2026
String theory, quantum mechanics, entropy, general relativity — 24 poster designs by 2046 Print Shop that turn physics concepts into beautiful objects worth hanging on a wall.
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Apr 2026
A Trip to Infinity, The Proof, N Is a Number — 25 documentaries that show the other face of mathematics: obsession, beauty, and the particular madness of chasing a question.
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Apr 2026
Numberphile, 3Blue1Brown, Eddie Woo, Socratica, Khan Academy — five YouTube channels built by people who loved mathematics first, and only then turned the camera on.
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Apr 2026
60 feet tall, 14 inches of ground contact. No aluminum tube touches another. The whole thing holds up because of what isn't there.
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Apr 2026
Most proofs that √2 is irrational use prime factorization. This one uses something simpler: if a smallest natural number witnessing rationality existed, you could always find a smaller one.
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Apr 2026
Victorian ornamental turning produced spirograph-like geometric forms of extraordinary precision — not drawn, not sculpted, but calculated by a machine that ran on mathematics.
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Apr 2026
In 1990, Marilyn vos Savant answered a probability puzzle correctly. Nearly 10,000 people — many of them academics — wrote to tell her she was wrong. She was not.
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Apr 2026
Dinara Kasko and artist José Margulis built kinetic sculptures from CNC-cut chocolate. They were assembled, admired, and eaten — which was the point.
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Apr 2026
The four-step learning method developed by Nobel Prize-winning physicist Richard Feynman. How it works, why it works, and how to apply it to anything.
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Apr 2026
On counting all valid 9×9 grids (6.7 sextillion), solving algorithms that work on paper, and why Sudoku is fundamentally a graph coloring problem.
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Apr 2026
Handwritten pages of spinor algebra, twistor diagrams, Penrose tiling prototypes, and Cayley algebra — alongside programs for a 1978 pocket calculator.
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Apr 2026
Arto Inkala's 2012 puzzle: 4.5% trivialization rate, 153 human attempts, three months to design — and what “hardest” actually measures.
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Apr 2026
MIT's first algebra entrance exam. The questions haven't changed. Everything else — tuition, class size, acceptance rate — is unrecognisable.
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Apr 2026
A Leicester paper applied Newtonian mechanics to Pinocchio’s nose — exponential growth, oak, and a hard limit at thirteen.
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Apr 2026
A Pringle is a hyperbolic paraboloid — stack, snap, can, and factory physics.
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Apr 2026
Zurich, 1912–1913 — puzzles, line elements, wrong turns, and the path to November 1915.
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Apr 2026
1897 — Indiana’s House passed a bill that implied π = 3.2. Then a mathematician walked in.
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Apr 2026
Maxwell in stone on Warsaw’s physics library — integral form, street level, no apologies.
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Apr 2026
A single red fox in the Pilliga vs. traps, baits, dogs — and a rewritten plan.
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Apr 2026
Henry Billingsley’s 1570 English Euclid — paper solids that still beat a headset
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Mar 2026
Peng Wang’s modular shelf — six rectangles, one famous sequence
ReadFeb 2026
Not a chart to memorize — a pattern to understand on the unit circle
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