When this curious contraption is switched on, an inner circle of white balls appears to be rolling inside the outer circle, but that's actually not the case at all. Below is a video explaining this circular motion illusion. Learn more about the mathematics behind it, specifically Copernicus’ Theorem, and the ingenious hypocycloid mechanical gear design by Girolamo Cardano (1501-1576) over at The Kid Should See This.
In case you don’t know, HackSpace is a terrific monthly maker magazine from the U.K. Published by the Raspberry Pi Foundation, HackSpace includes articles by bunnie huang, Andrew Lewis, Marc de Vinck, Sophy Wong, Bob Knetzger, and many other authors you many recognize from the pages of Make: magazine and other domains of the maker […]
My daughter loves the flip sequin shirts that are all the rage for kids these days. Ekaggrat Singh Kalsi’s daughter digs them too and she inspired his fantastic Sequino clock that “writes and rewrites” the time by flipping the sequins. Kalsi posted his build notes over at Hackaday. Sequino: A Clock Which Rewrites Time Again […]
Love Hultén, who makes retrofuturistic game consoles, built this thing called an EvoBoxx, which lets you play mathematician John Horton Conway’s Game of Life, a cellular automaton he devised in 1970. “The game is a zero-player game,” writes Hultén, “meaning that its evolution is determined by its initial state, requiring no further input. One interacts […]
Every family is chock full of stories. Stories of history, stories of memory, stories of accomplishment and stories of love. From a grandparent’s tales of life decades ago to a couple’s first meeting to amazing life experiences and moments that you wish could be preserved for future generations. Unfortunately, we all don’t have the literary […]
Minimalism isn’t just trendy, it’s also wise. Clearing clutter and keeping things simple in your home is great for both your mind and for the earth. Bring that movement to your bedside when you replace just about everything on and around your nightstand with the Tree of Light: Wireless Charger + Bluetooth Speaker + LED […]
The biggest companies in the world rely on Python to power their technology and services, and more brands of all sizes are jumping on board. As the second best-paid programming language in the country, Python offers developers the chance to make an average of $120K a year. Take your career, and your salary, to the […]