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2026

A. Boogert's 1692 Color Book, 271 Years Before PantoneRead at abakcus.com (opens in a new tab)
14 Oct 2026
Penrose Triangle: Why the Impossible Triangle Can't ExistRead at abakcus.com (opens in a new tab)
14 Oct 2026
Free Physics Textbooks from Universities and PhysicistsRead at abakcus.com (opens in a new tab)
11 Oct 2026
Humans since 1982: A Million TimesRead at abakcus.com (opens in a new tab)
11 Oct 2026
10 ChairsRead at abakcus.com (opens in a new tab)
11 Oct 2026
The Coffer Illusion and the Sixteen Circles Between the PanelsRead at abakcus.com (opens in a new tab)
9 Oct 2026
Juggler juggling juggling jugglersRead at abakcus.com (opens in a new tab)
6 Oct 2026
Math Symbols: Meaning, How to Read Them and LaTeX CodeRead at abakcus.com (opens in a new tab)
4 Oct 2026
29 Historic Math Books You Can Read for FreeRead at abakcus.com (opens in a new tab)
3 Oct 2026
22 Original Math Papers You Can Read for FreeRead at abakcus.com (opens in a new tab)
2 Oct 2026
The History of Mathematics, Written in the MarginsRead at abakcus.com (opens in a new tab)
1 Oct 2026
Free Math Textbooks from University MathematiciansRead at abakcus.com (opens in a new tab)
29 Sept 2026
The 17 Best Books for Learning Mathematical ProofsRead at abakcus.com (opens in a new tab)
28 Sept 2026
The Unit Circle Inside the 3-4-5 TriangleRead at abakcus.com (opens in a new tab)
28 Sept 2026
The USDA Pomological Watercolor CollectionRead at abakcus.com (opens in a new tab)
27 Sept 2026
1/998001: The Fraction That Lists Every Number but 998Read at abakcus.com (opens in a new tab)
26 Sept 2026
How Many People Are in Space Right Now?Read at abakcus.com (opens in a new tab)
22 Sept 2026
Fall Foliage Prediction MapRead at abakcus.com (opens in a new tab)
22 Sept 2026
Lissajous Curves Explained: From Tuning Forks to LidarRead at abakcus.com (opens in a new tab)
17 Sept 2026
Matsuyama's Paradox: Pythagoras Hiding in a PuzzleRead at abakcus.com (opens in a new tab)
17 Sept 2026
Swiss Cat Ladders: Bern's Zigzag Timber for CatsRead at abakcus.com (opens in a new tab)
17 Sept 2026
Kagen Sound's Puzzle Boxes: The Maze Is Not in the BoxRead at abakcus.com (opens in a new tab)
9 Sept 2026
Who Owns the Fruit on an Overhanging Branch?Read at abakcus.com (opens in a new tab)
8 Sept 2026
The Future of the Responsible CompanyRead at abakcus.com (opens in a new tab)
8 Sept 2026
Pictures by #TheStormpilotRead at abakcus.com (opens in a new tab)
8 Sept 2026
17 Best Books About Bees, Beekeeping, and HoneybeesRead at abakcus.com (opens in a new tab)
1 Sept 2026
The Lives of BeesRead at abakcus.com (opens in a new tab)
29 Aug 2026
The Famous Radium Atom Drawing Is Not Bohr'sRead at abakcus.com (opens in a new tab)
26 Aug 2026
The Beauty of Numbers in NatureRead at abakcus.com (opens in a new tab)
24 Aug 2026
The Best Calculators for Calculus StudentsRead at abakcus.com (opens in a new tab)
18 Aug 2026
Words You Can Spell With a CalculatorRead at abakcus.com (opens in a new tab)
11 Aug 2026
16 Fascinating Facts About Christopher Nolan's OppenheimerRead at abakcus.com (opens in a new tab)
11 Aug 2026
Dirac’s Handwritten ThesisRead at abakcus.com (opens in a new tab)
11 Aug 2026
Caterpillar with Chariot: Reuben Margolin's 20-Year ProblemRead at abakcus.com (opens in a new tab)
10 Aug 2026
A Beautiful Mind (2001): The Bar Scene Gets Nash WrongRead at abakcus.com (opens in a new tab)
10 Aug 2026
Pi (1998): Aronofsky's Math Thriller, ExplainedRead at abakcus.com (opens in a new tab)
10 Aug 2026
What Is the Riemann Hypothesis? A 16-Minute ExplanationRead at abakcus.com (opens in a new tab)
10 Aug 2026
Why a Cat Always Lands on Its FeetRead at abakcus.com (opens in a new tab)
10 Aug 2026
The Circle That Isn’t ThereRead at abakcus.com (opens in a new tab)
7 Aug 2026
Alexander Graham Bell’s Tetrahedral Kites: The Fractal He Flew Before It Had a NameRead at abakcus.com (opens in a new tab)
1 Aug 2026
68 Best Geometry Books for Mathematicians and DesignersRead at abakcus.com (opens in a new tab)
1 Aug 2026
A Quiet Place to Learn MathematicsRead at abakcus.com (opens in a new tab)
30 Jul 2026
What Is Mathematics Good For?Read at abakcus.com (opens in a new tab)
28 Jul 2026
Impossible Triangle Explained: Henry Segerman's Real-Life ModelRead at abakcus.com (opens in a new tab)
28 Jul 2026
Here’s Looking at Euclid: Helen Friel Folds Byrne’s Proofs into PaperRead at abakcus.com (opens in a new tab)
28 Jul 2026
Powers of Ten (1977): The Eames Film ExplainedRead at abakcus.com (opens in a new tab)
19 Jul 2026
Napier’s Bones: The Calculating Rods That Multiplied Before Machines DidRead at abakcus.com (opens in a new tab)
18 Jul 2026
Marie Curie's Radioactive NotebooksRead at abakcus.com (opens in a new tab)
16 Jul 2026
15 Science Books That Print Like Design Objects: The Kronecker Wallis CatalogRead at abakcus.com (opens in a new tab)
14 Jul 2026
The House That Calculus Paid ForRead at abakcus.com (opens in a new tab)
14 Jul 2026
James Garfield's Proof of the Pythagorean TheoremRead at abakcus.com (opens in a new tab)
12 Jul 2026
The Centennial Light: The Bulb That Never Went Out Since 1901Read at abakcus.com (opens in a new tab)
11 Jul 2026
Buffon’s Needle: Calculating π by Tossing Needles on the FloorRead at abakcus.com (opens in a new tab)
7 Jul 2026
17 Equations That Changed the WorldRead at abakcus.com (opens in a new tab)
5 Jul 2026
Sixteen Numbers on the Wall: Dürer's MelancholyRead at abakcus.com (opens in a new tab)
4 Jul 2026
25 Short Math Books You Can Finish in One SittingRead at abakcus.com (opens in a new tab)
4 Jul 2026
The Jastrow Illusion: The Same Shape That Refuses to Look the SameRead at abakcus.com (opens in a new tab)
2 Jul 2026
Feynman's Letter to His Wife: The Love Letter He Never MailedRead at abakcus.com (opens in a new tab)
25 Jun 2026
The Möbius Strip: That a One-Sided Thing Should Be PossibleRead at abakcus.com (opens in a new tab)
22 Jun 2026
Werner's Nomenclature of Colours — Patrick SymeRead at abakcus.com (opens in a new tab)
20 Jun 2026
Conquest of Space: The 1963 Polish Space StampsRead at abakcus.com (opens in a new tab)
19 Jun 2026
More Than Honey (2012) — Modern Times Through a Bee's EyesRead at abakcus.com (opens in a new tab)
19 Jun 2026
The Two Whales That Drew a Fibonacci SpiralRead at abakcus.com (opens in a new tab)
9 Jun 2026
Life's Devices — Steven VogelRead at abakcus.com (opens in a new tab)
3 Jun 2026
99 Variations on a Proof — Philip Ording on Mathematical StyleRead at abakcus.com (opens in a new tab)
1 Jun 2026
Asobi: When Newton's Cradle Learned to GlowRead at abakcus.com (opens in a new tab)
30 May 2026
Here We Are: Notes for Living on Planet Earth — Oliver Jeffers, Apple TV+Read at abakcus.com (opens in a new tab)
29 May 2026
The Ghost Who Solved a TheoremRead at abakcus.com (opens in a new tab)
28 May 2026
Jodorowsky's Dune (2013) — The Greatest Film Never MadeRead at abakcus.com (opens in a new tab)
27 May 2026
Real Time: Sweeper's ClockRead at abakcus.com (opens in a new tab)
25 May 2026
Nicolas Bourbaki: The Mathematician Who Never ExistedRead at abakcus.com (opens in a new tab)
24 May 2026
A Mathematician's Apology — G. H. HardyRead at abakcus.com (opens in a new tab)
24 May 2026
Why Do Fireflies Flash in Unison?Read at abakcus.com (opens in a new tab)
23 May 2026
The Geometry of Type — Stephen ColesRead at abakcus.com (opens in a new tab)
23 May 2026
The ABCs of Triangle, Square, Circle — Lupton & MillerRead at abakcus.com (opens in a new tab)
22 May 2026
Mr. Finch Explains Pi to a ClassroomRead at abakcus.com (opens in a new tab)
22 May 2026
32 Metronomes and the Strange SympathyRead at abakcus.com (opens in a new tab)
22 May 2026
Walk the International Space Station on Google Street ViewRead at abakcus.com (opens in a new tab)
18 May 2026
Poemotion — Takahiro Kurashima, 2011Read at abakcus.com (opens in a new tab)
14 May 2026
Overview: A New Perspective of Earth — Benjamin GrantRead at abakcus.com (opens in a new tab)
13 May 2026
Infinite Powers — Steven StrogatzRead at abakcus.com (opens in a new tab)
13 May 2026
How Smart Machines Think — Sean GerrishRead at abakcus.com (opens in a new tab)
8 May 2026
Compass, Ruler, and Silence — On Eric Broug's Islamic Geometric PatternsRead at abakcus.com (opens in a new tab)
7 May 2026
The Equations That Forgot They Were Equations — Alejandro Guijarro's MomentumRead at abakcus.com (opens in a new tab)
5 May 2026
Taming the Garden — Salomé Jashi, 2021Read at abakcus.com (opens in a new tab)
5 May 2026
René Magritte's The Blank Signature: A Journey Through the Mind-Bending Layers of RealityRead at abakcus.com (opens in a new tab)
3 May 2026
Drawing a Chair 64 Times: Erich Dieckmann and the Geometry of SittingRead at abakcus.com (opens in a new tab)
2 May 2026
Feynman on How Math Should Be Taught to ChildrenRead at abakcus.com (opens in a new tab)
1 May 2026
Al-Jaghmini's Al-Mulakhkhas: The Astronomy Textbook That Outlived an EmpireRead at abakcus.com (opens in a new tab)
30 Apr 2026
The Proof That 0.999… Is Exactly Equal to 1Read at abakcus.com (opens in a new tab)
27 Apr 2026
Kenneth Snelson's Needle Tower: 60 Feet, Zero ContactRead at abakcus.com (opens in a new tab)
21 Apr 2026
The Patterns No Hand Could Have Drawn — Specimens of Fancy TurningRead at abakcus.com (opens in a new tab)
21 Apr 2026
A Number That Cannot Be the Smallest — A Proof That √2 Is IrrationalRead at abakcus.com (opens in a new tab)
21 Apr 2026
Dinara Kasko's Geometrical Kinetic Tarts — Sculpture You EatRead at abakcus.com (opens in a new tab)
19 Apr 2026
Marilyn vos Savant Was Right All AlongRead at abakcus.com (opens in a new tab)
19 Apr 2026
Cymatics: Sound Has a Shape — Nigel Stanford, 2014Read at abakcus.com (opens in a new tab)
19 Apr 2026
The Feynman Technique: A Complete GuideRead at abakcus.com (opens in a new tab)
18 Apr 2026
The Mathematics of Sudoku: How Many Grids, Why 17 CluesRead at abakcus.com (opens in a new tab)
17 Apr 2026
Inside Roger Penrose's NotebookRead at abakcus.com (opens in a new tab)
15 Apr 2026
Arto Inkala's world's hardest Sudoku — 23 clues, one solution, three months of workRead at abakcus.com (opens in a new tab)
14 Apr 2026
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153 posts from abakcus.com are held, newest first (corpus.blog, measured 16 October 2026).