#video on capstan winches. Hmm, if the capstan amplification factor is e^{\mu \varphi}, does that mean you can get super accurate measurements of the coefficient of friction \mu by measuring the force ratio?
The #ACM’s #open-access project: “Beginning January 2026, all ACM publications and related artifacts in the ACM Digital Library will be made open access.”
#Nighthawk #video on 50%-air to 75%-air aerated #concrete with “kitchen ingredients”; he likes 60% best. Specifically, he stabilizes the foam with pre-hydrated xanthan gum to keep it from collapsing while you’re mixing the cement. Dawn Ultra dish detergent (one part to 16 parts water) is his surfactant. Initially wetting the xanthan gum with “rubbing alcohol” (presumably isopropanol) helps a lot with wetting it; glycerin is apparently unnecessary. He thinks that this works because the xanthan gum slows the cement’s absorption of water.
“Valuable Humans in Transit” #fiction
#video on "Noyron" generative design software for rockets, with footage of some tests. Cool ambigram logo too.
they surveyed a bunch of men and women to see what male hobbies are most and least attractive to women. I wonder if they did the same for female hobbies’ attractiveness to men? #psychology
A survey about past sexual habits attempts to find “alpha widows”, women (specifically!) who have trouble finding a new partner (specifically a male one) who measures up to their previous best, and therefore have trouble forming new pair bonds. “In our sample, we find that the alpha widow experience is rare overall and that men score significantly higher across items on our scale. Although we have framed this using manosphere terminology, the finding that men remain more hung-up over past sexual partners is broadly consistent with past research in evolutionary psychology. Men and women experience similar amounts of emotional distress following a break-up (Morris & Reiber, 2011; Morris et al., 2015a), but men are slower to recover — and in more cases than women may also never fully recover (Morris, 2015b).”
brutal takedown of #manosphere influencer Rollo Tomassi, who pretended to study evolutionary #psychology
#manosphere influencers and footsoldiers are unattractive. #psychology
#manosphere influencers are rated as unattractive in a survey. #psychology
attractiveness correlates only very weakly wth lifetime sexxual partner count. #psychology