Ma mère etait prof de français. elle préférait largement un mot gentil de ses élèves sur une jolie carte ou dessin que des kdos. J’en ai retrouvé à son décès . Très émouvant.

Dear Volodymyr Zelenskyy, dear Ukrainian friends, you are not alone.

Asteroid News xkcd.com/2984

estonia's power grid frequency right now!

Profil picture from : Oskay, Windell, and Eric Schlaepfer. Open Circuits: The Inner Beauty of Electronic Components. No Starch Press, 2022.

Manufacturing of Sigma objective lenses. Very nice video ! www.youtube.com/watch?v=qx14...

"well, that escalated quickly." Amazing visualization of every space launch in history, guiding the simple realization that we are in the second Golden Age of space. youtu.be/yHNKzQLNiuY?...

Today I want to present to you the in my opinion most impressive machine in the world: The #EUV (extreme ultraviolet) #lithography tool of #ASML. The tool has a size of 10x4x4 meters and costs ~200 million Euros. This tool is used for the fabrication of every modern chip in the world.