Mathematician Hannah Fry explains the "Ham Sandwich Theorem," a mathematical concept that says that even the most poorly constructed sandwich can be cut exactly in half with only one straight cut of a knife.
Proposed by Hugo Steinhaus and proved by Stefan Banach in the 1930s, it's also called the Stone–Tukey theorem after Arthur Harold Stone and John Tukey, who wrote an expanded paper on the theorem in 1942.
Unfortunately, the theorem does not provide insight into where to make this cut. Of course, as anyone who has to divide a sandwich in half knows, the best way to get two perfect halves is to ask one young sibling to cut it in half and let the other sibling pick which half they get. You'll rarely see such precise division outside a science lab. Works even better on three-layer cake.
• Ham Sandwich Problem (YouTube / Numberphile)
Russian speed-cuber Evgeny Bondarenko decided to tackle the biggest challenge on the market today: solving the 17x17x17 Rubik’s Cube. Talk about concentration!
YouTuber Retic over at Prehistoric Pets TV has a huge collection of pythons and other ancient creatures. Here he shows how and why a clutch of python eggs can be lifted up in giant sticky clumps.
Clifford Burgoni wanted to sell his system for cleaning 86,000 solar panels, so he made a cool drone video of the gear in operation.
Businesses big and small use Microsoft Excel for everything from data visualization to bookkeeping, and chances are you’ve already had some exposure to this ubiquitous tool. Whether you’re looking to improve your hiring potential or boost your Excel efficiency, the Ultimate All-Level Excel Bootcamp can get you Excel-savvy with nearly 70 hours of training, and it’s […]
The workday is long, and inevitably, you’re going to find yourself needing to take a break from the daily grind. With Mini Materials Miniature Cinder Blocks, you can take some time for yourself and decompress by turning your desk into a miniature construction site. They’re available today in the Boing Boing Store for $22.49. Handmade […]
Handheld radios might seem a bit archaic, but in an emergency situation, few things will keep you as reliably connected to the outside world. This Emergency Multi-Function Radio & Flashlight takes the utility of the tried-and-true radio and combines it with a powerful flashlight and self-sufficient energy system. It’s available in the Boing Boing Store for […]