The Hoberman Switch Pitch Throwing Ball is a $12 toy that instantiates a dual polyhedron: every time you throw it, it turns inside-out; there's a wealth of scientific literature that explains how this works, including this open-access paper from the Journal of the International Association for Shell and Spatial Structures. Here's JWZ's summary: "The curved body panels that make it look like a sphere hide an internal structure that is a cube; or really, two tetrahedrons embedded in a cube; and when it its its activation energy, the tetrahedron becomes its dual, swapping faces and vertices."
Behold, my two most favorite pieces of Father's Day media. I'm thousands of miles from my own family today, but I'm celebrating Father's Day in my own way.
The National Institutes of Health maintain a 3D Print Exchange, a kind of miniature Thingiverse for open-licensed, 3D printable objects for teaching and practicing public health.
In 1976, Walt Disney World was riding high: the oil crisis was over, tourists were flocking back to Florida, and the successful bicentennial celebration at the Florida Disney resort had been national news.
The human eye is a powerful thing, but it’s not so great at seeing in the dark or around tight spaces, which is partially why most of us struggle with unplugging drains, cleaning under the fridge, and other hard-to-reach jobs. This 1080p HD Waterproof WiFi Wireless Endoscopic Camera, however, gives you the flexibility necessary to get […]
Macs are undeniably some of the most versatile computers on the market, but they can do so much more than what their stock apps allow. For those looking to get the most out of their Mac hardware, the Pay What You Want 2018 Super Mac Bundle features 10 of the industry’s top apps, including photo editors and […]
Salesforce has reinvented the way companies manage customer information, close deals, and ultimately drive revenue, so it should come as no surprise that it’s one of the more valuable skills you can list on your resume today. In fact, according to research from Burning Glass, this platform is now the 7th most in-demand software skill, beating out […]