"Penrose Stars", a GIF created by davidope and inspired by the famed impossible object, the Penrose stairs. See more of dvdp's abstract GIFs here. (via Imaginary Foundation)
Penrose Stars animated GIF
Why a ball in a box vanishes as you add more dimensions
Put a ball in a box. In two dimensions, the ball (a circle) fills most of the box (a square). In three dimensions, a sphere still takes up a good… READ THE REST
Four students solved a geometry puzzle by pretending squares were resistors
Four Cambridge math students in the 1930s wanted to know if you could fill a square with smaller squares, each a different size. They solved it by pretending the squares… READ THE REST
Two twisty doughnut shapes solve a 150-year-old geometry puzzle
In 1867, French mathematician Pierre Ossian Bonnet proved something that seemed like common sense: if you know how far apart any two points on a surface are, and how the… READ THE REST
Your next hobby, side hustle, or promotion could start with one of the 1,000+ courses in this $20 platform
Disclosure: Boing Boing earns a commission on purchases made through links in this post. TL;DR: Pay $19.97 once (reg. $600) and get lifetime access to 1,000+ online courses covering today's most valuable career… READ THE REST
Until the end of the day on July 5, you can get Windows 11 Pro for a one-time $10.49 payment
Disclosure: Boing Boing earns a commission on purchases made through links in this post. TL;DR: You have until 11:59 p.m. PT on July 5 to get Windows 11 Pro for only $10.49. Microsoft… READ THE REST
We found one lifetime license that can replace 27 subscriptions, and it's only $30
Disclosure: Boing Boing earns a commission on purchases made through links in this post. TL;DR: Get the enSili Mac Bundle and grab 27 native Mac apps for $30. Mac users tend… READ THE REST
