Did my first #Houdini -generated 3d print test last night. Relatively primitive, but oooh is it fun to hold! Extremely light and extremely stiff, similar internal structure to bird bones 🤓. 12 hours' #3dprinting on a Phrozen Mega 8k.

授業「個と群」をきっかけに協働している割鞘さんが東京大学総長賞を受賞しました！おめでとうございます！ u-tokyo.ac.jp/ja/students/ev…

お湯の動き

It's harder to create movement in water than in air, because water molecules are closer together than air molecules. To show that, physicist Andreas Wahl put himself in front of a weapon submerged in water and fired it - on himself [full video: buff.ly/3pmWH7t]

Zinnia flowers have a range of appearances, from a single row of petals to a dome shape and they may be white or characterized by multiple amazing colors: chartreuse, yellow, orange, red, purple, or lilac [source: buff.ly/2Jp0Fpe]

Bose spent years and millions creating the ultimate car suspension system. A technical success but a commercial flop, it never came to be [read more: cnet.co/2AyOT7N]

This article presents an active ball joint mechanism (ABENICS) enhanced by interactions of spherical gears. The gearbased joint drives three rotational degrees of freedom (RDoF) without slippage [full paper: buff.ly/3gG96AH] [media: buff.ly/3gMZ67y]

When two coherent vortex rings collide head-on, they explode into a turbulent cloud. The rapid generation of a small-scale flow structures is mediated by the interactions of the two colliding vortex cores [full video: buff.ly/2mNOHgi]

Sisyphus is a kinetic sculpture where a metal ball rolls silently through sand, creating and erasing beautiful patterns [learn more, order: sisyphus-industries.com]

Konstantin Chaykin's Levitas is just one of the latest models of a long tradition of "magic watches", using a brilliant mechanical solution with sapphire disks [read more: buff.ly/2O30FT9] [site: buff.ly/3qzfYTF] [source of the clip: buff.ly/3A3mc2k]

The kiddies' motor wheel (1927). Have we still toys like this? [source, full video, more: buff.ly/2tdEifY]

A remarkable animation made on the photos taken on July 17, 2018 by Alessandro Botti. A lunar eclipse animated composite [original photo: buff.ly/2vKm7k7] [source of the animation: buff.ly/3y0DjQS]

Puddles #b3d

This collection of videos was created by John Friedman in the 1960s to explain fluid mechanics in an accessible way for undergraduate engineering and physics students [full video, read more: buff.ly/3w5TfzV]

フリーハンドで電子回路を描ける手持ちプリンター「Print-A-Sketch」 手書き絵のスキャン・コピーも可能　levtech.jp/media/article/… 様々な素材に回路を自由スケッチできる持つプリンタ。走行速度に応じインク吐出を調整で手ブレや雑な操作に対応。回路同士が重ならないよう自動で迂回/停止して印刷。

They’re alive! We’re blown away by these liquids dancing with the power of electrodes 🤩 Exertion Games Lab

Aglantha digitale is unique among known jellyfish in having giant axons in the subumbrella (the concave inner surface of the bell) which are involved in its rapid escape response [read more: buff.ly/3u60ZTJ]