Science / Math / Physics

These circles aren’t moving at all, yet your brain swears they’re spinning wildly! Math and stripes

These circles aren’t moving at all, yet your brain swears they’re spinning wildly! Math and stripes just broke your eyes with this wild motion illusion. Can't unsee it? https://t.co/iJPI5uRDGG

Mar 31, 2026

In 1999, calculating 3D lighting required doing 1 / sqrt(x) millions of times a second. CPUs back t

In 1999, calculating 3D lighting required doing 1 / sqrt(x) millions of times a second. CPUs back then would completely choke on this math. so the developers of Quake III used this literal black magic

Mar 21, 2026

I ACCIDENTALLY OPENED MY CTO'S PERSONAL NOTION WORKSPACE AND NOW I UNDERSTAND WHY HE SHIPS 5X FASTER

I ACCIDENTALLY OPENED MY CTO'S PERSONAL NOTION WORKSPACE AND NOW I UNDERSTAND WHY HE SHIPS 5X FASTER THAN THE REST OF US. He is 48. I am 26. He manages 3 products and never works past 5 PM. I work 10

Mar 20, 2026

New blog post: A Decade of Slug This talks about the evolution of the Slug font rendering algorithm,

New blog post: A Decade of Slug This talks about the evolution of the Slug font rendering algorithm, and it includes an exciting announcement: The patent has been dedicated to the public domain. https

Mar 17, 2026

The working space of Steve Jobs https://t.co/ses3O06YnX

Mar 14, 2026

Very "fun" to discover that "in general" means different things: mathematician: "always" normal per

Very "fun" to discover that "in general" means different things: mathematician: "always" normal person: "not always"

Mar 7, 2026

If You Love Mathematics and Physics, You'll Love Control Systems Episode 1 Control Systems are the...

If You Love Mathematics and Physics, You'll Love Control Systems Episode 1 Control Systems are the craft of keeping something doing what you want, even when the environment is pushing back. You simply

Mar 2, 2026

If You Love Mathematics and Physics, You'll Love Control Systems Episode 1 Control Systems are the

If You Love Mathematics and Physics, You'll Love Control Systems Episode 1 Control Systems are the craft of keeping something doing what you want, even when the environment is pushing back. You simply

Mar 2, 2026

If You Love Mathematics and Physics, You'll Love Control Systems Episode 1 Control Systems are the...

If You Love Mathematics and Physics, You'll Love Control Systems Episode 1 Control Systems are the craft of keeping something doing what you want, even when the environment is pushing back. You simply

Mar 2, 2026

The neuroscience here is more damning than the advice. Killingsworth and Gilbert tracked 5,000 peop...

The neuroscience here is more damning than the advice. Killingsworth and Gilbert tracked 5,000 people across 83 countries using real-time iPhone sampling. They pinged participants at random moments th

Mar 2, 2026

The neuroscience here is more damning than the advice. Killingsworth and Gilbert tracked 5,000 peop

The neuroscience here is more damning than the advice. Killingsworth and Gilbert tracked 5,000 people across 83 countries using real-time iPhone sampling. They pinged participants at random moments th

Mar 2, 2026

The neuroscience here is more damning than the advice. Killingsworth and Gilbert tracked 5,000 peop...

The neuroscience here is more damning than the advice. Killingsworth and Gilbert tracked 5,000 people across 83 countries using real-time iPhone sampling. They pinged participants at random moments th

Mar 2, 2026

For anyone wondering how a third-grader can complete six years' worth of math in a single year. Thi...

For anyone wondering how a third-grader can complete six years' worth of math in a single year. This knowledge graph spans 3,000 math topics, from 4th grade to the university level, providing the perf

Mar 1, 2026

For anyone wondering how a third-grader can complete six years' worth of math in a single year. Thi

For anyone wondering how a third-grader can complete six years' worth of math in a single year. This knowledge graph spans 3,000 math topics, from 4th grade to the university level, providing the perf

Mar 1, 2026

For anyone wondering how a third-grader can complete six years' worth of math in a single year. Thi...

For anyone wondering how a third-grader can complete six years' worth of math in a single year. This knowledge graph spans 3,000 math topics, from 4th grade to the university level, providing the perf

Mar 1, 2026

Visited a homeschool enrichment program (4th-12th). They offer things like👇 - Robotics - Filmmakin

Visited a homeschool enrichment program (4th-12th). They offer things like👇 - Robotics - Filmmaking - Adventure PE - Rocks & Geodes - Forensic Science - Sewing for Service - Photography & Canva - Lif

Feb 27, 2026

If you want to turn chaos into calm in math, the Laplace transform is here to help. The Laplace tr...

If you want to turn chaos into calm in math, the Laplace transform is here to help. The Laplace transform is a powerful tool that changes a function from the time domain to the s-domain. Think of it a

Feb 27, 2026

If you want to turn chaos into calm in math, the Laplace transform is here to help. The Laplace tr

If you want to turn chaos into calm in math, the Laplace transform is here to help. The Laplace transform is a powerful tool that changes a function from the time domain to the s-domain. Think of it a

Feb 27, 2026

If you want to turn chaos into calm in math, the Laplace transform is here to help. The Laplace tr...

If you want to turn chaos into calm in math, the Laplace transform is here to help. The Laplace transform is a powerful tool that changes a function from the time domain to the s-domain. Think of it a

Feb 27, 2026

If you ever wonder the purpose of life My grandmother died 9 years ago My son never met her and ha...

If you ever wonder the purpose of life My grandmother died 9 years ago My son never met her and has no memories of her His children are unlikely to even know her name or care about who she was Such is

Feb 23, 2026

Sir Roger Penrose argues that current AI is a misnomer because it lacks the one ingredient essential

Sir Roger Penrose argues that current AI is a misnomer because it lacks the one ingredient essential for true intelligence: Understanding. By applying the lens of mathematical logic, he explains that

Feb 23, 2026

In 1917, Soichi Kakeya asked: what is the smallest area needed to rotate a unit needle 180°? A cir...

In 1917, Soichi Kakeya asked: what is the smallest area needed to rotate a unit needle 180°? A circle works—but smaller shapes exist. In 1919, Abram Besicovitch proved something unexpected: there is n

Feb 17, 2026

One of the best optical illusions: stare at the stairs and they seem to switch direction every 10–15...

One of the best optical illusions: stare at the stairs and they seem to switch direction every 10–15 seconds — even though the image never changes. https://t.co/h7EpPtdCSj

Feb 17, 2026

These lines actually are parallel https://t.co/IOVshhdPiN

Feb 13, 2026

As a neuroscientist, the most powerful bias I see is mimetic desire - we inherit other people's want...

As a neuroscientist, the most powerful bias I see is mimetic desire - we inherit other people's wants and mistake them for our own. It's why the most talented people compete for the same narrow set of

Feb 12, 2026

Noether’s Theorem ✍️ This equation reveals that every continuous symmetry in nature, a change you c...

Noether’s Theorem ✍️ This equation reveals that every continuous symmetry in nature, a change you can make to a system without affecting its physical laws, brings about a conservation law. In simple t

Feb 12, 2026

Noether’s Theorem ✍️ This equation reveals that every continuous symmetry in nature, a change you c

Noether’s Theorem ✍️ This equation reveals that every continuous symmetry in nature, a change you can make to a system without affecting its physical laws, brings about a conservation law. In simple t

Feb 12, 2026

Scientists found the exercise that turns your body into a fat-burning machine in 6 weeks. It's not ...

Scientists found the exercise that turns your body into a fat-burning machine in 6 weeks. It's not HIIT. It's not lifting. It's barely even "hard." 99% of people in the gym are doing the opposite. Her

Feb 11, 2026

“Escher! Get your ass up here!” https://t.co/Tt0qS9WaCF

Feb 11, 2026

Your eyes swear this shape is real… but physics says it shouldn’t exist. This impossible ring plays ...

Your eyes swear this shape is real… but physics says it shouldn’t exist. This impossible ring plays with perspective, angles, and depth, forcing your brain to invent what can’t survive in 3D. https://

Feb 10, 2026

Your eyes swear this shape is real… but physics says it shouldn’t exist. This impossible ring plays

Your eyes swear this shape is real… but physics says it shouldn’t exist. This impossible ring plays with perspective, angles, and depth, forcing your brain to invent what can’t survive in 3D. https://

Feb 10, 2026

Maple Mono: Open source monospace font font.subf.dev

Maple Mono: Open source monospace font Comments

Feb 6, 2026

Maple Mono: Open source monospace font Comments

Feb 6, 2026

Color, clarity, and geometry. An interactive version of Byrne’s The Elements of Euclid (1847) is now...

Color, clarity, and geometry. An interactive version of Byrne’s The Elements of Euclid (1847) is now online—and beautiful. https://t.co/BNXwut6zaq https://t.co/RwflBdjoPZ

Feb 3, 2026

This is a reminder that every diagram from my book Projective Geometric Algebra Illuminated is avail...

This is a reminder that every diagram from my book Projective Geometric Algebra Illuminated is available on Wikimedia Commons under the CC-BY-4.0 license. They can be freely used in slides, papers, bo

Jan 27, 2026

In 1905, Russian Mathematician Andrey Andreyevich Markov asked a heretic question for the time: if r...

In 1905, Russian Mathematician Andrey Andreyevich Markov asked a heretic question for the time: if randomness is allowed to remember something, do averages still behave or does probability theory fall

Jan 25, 2026

In 1905, Russian Mathematician Andrey Andreyevich Markov asked a heretic question for the time: if r

In 1905, Russian Mathematician Andrey Andreyevich Markov asked a heretic question for the time: if randomness is allowed to remember something, do averages still behave or does probability theory fall

Jan 25, 2026

I’m 54, a physicist, have spent decades using mathematics to study the universe, solve problems, and...

I’m 54, a physicist, have spent decades using mathematics to study the universe, solve problems, and build things. If your work touches numbers, now or in the future, and you want to learn math proper

Jan 23, 2026

I’m 54, a physicist, have spent decades using mathematics to study the universe, solve problems, and

I’m 54, a physicist, have spent decades using mathematics to study the universe, solve problems, and build things. If your work touches numbers, now or in the future, and you want to learn math proper

Jan 23, 2026

This is hands down one of the coolest experiments Chris Hadfield did. Watch the incredible surface t...

This is hands down one of the coolest experiments Chris Hadfield did. Watch the incredible surface tension in action as he starts to wring out a wet towel while floating in space. 🌌 https://t.co/fW8X

Jan 20, 2026

This is hands down one of the coolest experiments Chris Hadfield did. Watch the incredible surface t

This is hands down one of the coolest experiments Chris Hadfield did. Watch the incredible surface tension in action as he starts to wring out a wet towel while floating in space. 🌌 https://t.co/fW8X

Jan 20, 2026

Incredible work by @yuruyurau Mathematics sorcery! 🤯 From iterated composition of basic functions,...

Incredible work by @yuruyurau Mathematics sorcery! 🤯 From iterated composition of basic functions, a life form is born 🫡 https://t.co/8K7tcwItvo

Jan 20, 2026

Incredible work by @yuruyurau Mathematics sorcery! 🤯 From iterated composition of basic functions

Incredible work by @yuruyurau Mathematics sorcery! 🤯 From iterated composition of basic functions, a life form is born 🫡 https://t.co/8K7tcwItvo

Jan 20, 2026

BREAKING 🚨 TESLA HAS PATENTED A "MATHEMATICAL CHEAT CODE" THAT FORCES CHEAP 8-BIT CHIPS TO RUN ELITE...

BREAKING 🚨 TESLA HAS PATENTED A "MATHEMATICAL CHEAT CODE" THAT FORCES CHEAP 8-BIT CHIPS TO RUN ELITE 32-BIT AI MODELS AND REWRITES THE RULES OF SILICON 🐳 How does a Tesla remember a stop sign it has

Jan 17, 2026

BREAKING 🚨 TESLA HAS PATENTED A "MATHEMATICAL CHEAT CODE" THAT FORCES CHEAP 8-BIT CHIPS TO RUN ELIT

BREAKING 🚨 TESLA HAS PATENTED A "MATHEMATICAL CHEAT CODE" THAT FORCES CHEAP 8-BIT CHIPS TO RUN ELITE 32-BIT AI MODELS AND REWRITES THE RULES OF SILICON 🐳 How does a Tesla remember a stop sign it has

Jan 17, 2026

The Trap in Every Mathematics Lecture If you’ve taken a lot of math courses, you start to recognize...

The Trap in Every Mathematics Lecture If you’ve taken a lot of math courses, you start to recognize a pattern. There’s a moment where the lecturer is warming up with the obvious stuff...add matrices e

Jan 14, 2026

The Trap in Every Mathematics Lecture If you’ve taken a lot of math courses, you start to recognize

The Trap in Every Mathematics Lecture If you’ve taken a lot of math courses, you start to recognize a pattern. There’s a moment where the lecturer is warming up with the obvious stuff...add matrices e

Jan 14, 2026

They REALLY don't want you to know this, but the best math curriculum for modern kids was written in...

They REALLY don't want you to know this, but the best math curriculum for modern kids was written in the 1800s. This is what I use once my kids know their numbers and how to count. Their math skills?

Jan 9, 2026

They REALLY don't want you to know this, but the best math curriculum for modern kids was written in

They REALLY don't want you to know this, but the best math curriculum for modern kids was written in the 1800s. This is what I use once my kids know their numbers and how to count. Their math skills?

Jan 9, 2026

Seth Braver's book "The Dark Art of Linear Algebra" recently popped off on X, and people should real...

Seth Braver's book "The Dark Art of Linear Algebra" recently popped off on X, and people should really check out his single-variable calculus, pre-calc and non-euclidean geometry books too. I posted a

Jan 9, 2026