white-black \ yellow-blue \ red-green

Interesting image. Let us know if you have found the source.

Filmpje: Erik Nieuwenhuis over Lijn 1 - Tzum Van onze oud-medewerker Erik Nieuwenhuis verscheen onlangs Lijn 1 (Brooklyn). Gerwin van der Werf schreef in Trouw over deze roman waarin passagiers in de

www.tzum.info/2026/03/film...

Schrijver Erik Nieuwenhuis kruipt in de levens van passagiers van Amsterdamse tramlijn 1 Schrijver Erik Nieuwenhuis duikt 30 jaar na zijn eerste tramrit in de levens van Lijn 1-passagiers. Tragiek en hoop in Amsterdam. Lees het hele verhaal.

Lijn 1 is het prachtige nieuwe boek van Erik Nieuwenhuis.

www.nhnieuws.nl/nieuws/35833...

Portrait of Isaac Newton by Godfrey Kneller 1689

First edition of Newton's Principia

The evolution of Newton's mechanics from De motu (1684) to Principia (1687) #histsci
thonyc.wordpress.com/2026/03/26/f...

En helemaal bijgewerkt!

Japan’s cherry blossoms are emerging increasingly early Experts think climate change is to blame

Deed me denken aan de grafiek met de datum van de kersenbloesem in Japan.

www.economist.com/graphic-deta...

They seem to enjoy sitting in their little chairs.

I guess there is a new interpretation of “never again” that I missed.

Bas van Fraassen Wins Schock Prize - Daily Nous Bastiaan "Bas" van Fraassen, professor emeritus of philosophy at Princeton University, has been awarded the 2026 Rolf Schock Prize in Logic and Philosophy. The Schock Prizes are bestowed by the Royal ...

Bas van Fraassen has won the 2026 Rolf Schock Prize in Logic and Philosophy

Pick up the nearest book. Turn to page 42, and post the second sentence.

His entire savings, which he has brought with him from South Africa, amount to eighty-four pounds. He must find a job at once.

We spoke English when we met in Nuremberg. Your German is very easy to follow with my Dutch ears.

The image is a meme styled like a framed painting of the philosopher René Descartes, with his long dark hair and clothing visible but the central part of his face blurred out. At the top, in bold black letters on a white background, the text reads: “Descartes when he realized that people who don`t think also exist.”

In the final assignment of this year's Vision for Autonomous Robots course the students have to create a Visual 3D map and do the navigation on that map. Luckily there is an Aibo robot dog overlooking their progress from its watchtower.

I’m afraid I may have to disappoint you. I love that engineers from the 2020s are discovering science from the 1980s.

Next step for CNN architectures: from coarse to fine spatial scales.

Indeed, very 1980s scale-space. I love it!

Happy GIS Day! 🌍❣️

Felt fitting that the theme of the #30DayMapChallenge was projections today! I want to dive into the math behind these sometime, it’s fascinating!!

For reasons I do not recall the Geo-Walks have always been on weekdays. So, the next Amsterdam Geo-Walk is on Saturday 15 November, starting at 10:00.

The main characters are father & son Blaeu, and Mayor Hudde, with cameos of Descartes and Huygens.

You can sign up at www.skool.com/amsterdam-ge...

It is election night here in the Netherlands. We voted today for the members of parliament in the Second Chamber.

It is quite unpredictable this time.

I always enjoy looking at the people behind the reporter at the gatherings of the political parties. As an amateur anthropologist.

Same

Deze info heb ik nu even nodig. Dank Steeph!

Also, I was happy to discover that the prime meridian (longitude = 0 degrees) was located near the Canary Islands.

If you'd like to learn more about Blaeu and mathematics & science & technology in 17th century Amsterdam, check out www.skool.com/amsterdam-ge...

As a citizen of Amsterdam, I was invited to celebrate its 750th anniversary in City Hall on Dam Square. I was mainly interested in the 6.24-meter-diameter floor maps by Joan Blaeu in the Burgerzaal.

I made a cameo appearance during an interview for local news channel AT5. I am the man in blaeu.

The Royal Palace Amsterdam is probably the only building in the city that is exactly aligned with the cardinal directions.

Strangely satisfying.

I wish Apple would have the same love for their Music apps as their Maps and Weather and Pages and Keynote and Numbers apps. Especially the Music app on the Mac is very disappointing.

Geometric Vision | Lesson 8 | Natural Perspective YouTube video by Stijn Oomes

Natural Perspective is an approach that basically ignores the optical projection. Euclid called it 'visual cone’ (300 BC). Gibson later called it 'visual solid angle’ (1986). I apply Rational Trigonometry (Wildberger 2005) and get pleasantly simple expressions.

youtu.be/9qCtaVkFZsI

In the 7th and final session today I gave a summary of the theory of vision I am developing. I realised I have shared many partial results but have never given a overview of all the steps in the vision process.

If you want to join me on this adventure, sign up at
www.skool.com/geometric-vi...