Linkage

Wooden mechanical etchasketch clock (via, YouTube). The amazing senior project of Japanese design student Suzuki Kango.

Strong evidence that most largescale realworld networks are not powerlaw graphs (G+, via). With bonus snark about the standards for model quality among physicists trained in statistical mechanics.

Archival activism: the editors fighting Wikipedia’s sexism problem. About the Women in Red group and their work to increase the number of biographies of women on Wikipedia.

Inbrowser dynamic simulation of many origami folds (via, also via).

The mother of all swipes , about Joan Ball, pioneer of what would now be called social media in 1960s England. Via a story about sexism, coverups of sexism, and intellectual appropriation among IEEE historians.

How the new Pennsylvania congressional redistricting will greatly simplify and shorten the borders between districts (G+).

Spiraling origami tessellations by Ekaterina Lukasheva (G+, via).

Good intentions, poor optics: BYU mathematics departments sets up a panel on women in mathematics whose four panelists are all male (G+).

Prime number (G+). Now a Good Article on Wikipedia.

Loxodromic symmetry of hyperbolic space), gorgeously animated by Roice Nelson.

The top science journals publish flashier papers, but are they better papers? (G+, via). This article suggests that, measured in terms of methodological quality, they are actually worse.

An engineer’s guide to sexism. A keynote speech by Teresa Meng to the International Solid State Circuits Conference on her experiences with sexism.

Alexandrov’s uniqueness theorem: surfaces that are locally Euclidean except for finitely many cone points whose angular defects add to can always be folded to form the surface of a unique convex polyhedron. Another new Good Article on Wikipedia.

Peace for Triple Piano and its “Making Of” video, by Vi Hart and Henry Segerman. Watch the first one on a viewer capable of interacting with spherical videos. Watch the second one to learn how the first one is actually a time crystal.