By George Hart for the Museum of Mathematics Here’s a challenge for you. Make the coolest thing you can from a bucket of old golf balls. It might be hard to beat this Sierpinski triangle and Sierpinski tetrahedron! These are both made by Dale Seymour. And in case you are wondering if is is solid […]
By George Hart for the Museum of Mathematics Cellular automata are mathematical systems that can generate surprisingly complex patterns from very simple rules. Camilla Fox worked out a way to knit cellular automata patterns by using two colors of yarn. One of the two colors is brought to the front for each stitch according to […]
Hubble turns twenty today. The orbiting space telescopes — they grow up so fast. One day, it can barely focus its little lens, and seemingly, the next, it’s exploring dark energy (let’s call it its Goth phase). Happy birthday, Hubble. Spaceship Earth is so proud of you. NASA writes on its Hubble page: Space shuttle […]
We’ll call it Math Wednesday. Marc de Vinck turned me on to these amazing fluid-based polygons and polyhedra: When a vertical water jet strikes a circular horizontal impactor, the water is deflected into a horizontal sheet. At sufficiently high speeds, the flow results in a circular water sheet, whose radius is set by a balance […]
By George Hart for the Museum of Mathematics Whittling is a traditional technique for making one-of-a-kind objects that doesn’t get enough attention nowadays. A time-old method of demonstrating one’s whittling technique is to carve linked objects from a single piece of wood. The above step-by-step guide shows four stages in making a pair of linked […]
Todd Harrison (Mesa, AZ) has a nice post on his blog about a recent ANSR (Arizona Near Space Research) balloon launch, the group’s 55th! Rich Osgood from Heatsynclabs.org and I were invited observers. Our objective was to help track the balloon and locate the landing zone while testing our own radio balloon tracking equipment. I’m […]
I love Caleb Charland‘s geeked-out photography. His work, in essence, consists of scientific experiments explored on film — magnets, electricity, fluid dynamics — all beautiful. My process and choice of subject matter stems from growing up in a do-it-yourself household where I learned to appreciate the power that tools and materials hold. As I explore […]
