The white circles in this gif travel in a straight line across the diameter of the black circle. In the process, they accelerate toward the center and decelerate away with the velocity of a swinging pendulum.
Here's another colorful illusion with the same pendulum movement of the circles:
There's a scene in my novel Homeland (the sequel to Little Brother) in which the first 1,000 digits of Pi are featured; when it came time to produce the audiobook edition, poor Wil Wheaton -- the narrator -- ended up reading out Pi for four solid minutes, with some entirely understandable difficulties. Nick Land set […]
Are you the driver in the lot who parks in the first spot you see? Or do you circle around and around looking for a spot by the door? Physicists Paul Krapivsky of Boston University and Sidney Redner of the Santa Fe Institute explored the mathematics of parking. The research required different equations and simulations […]
In the early days of the web, everyone wanted a .com domain for their site. As a result, all the good ones got snapped up. But .com no longer has the cachet it once did. In fact, many new businesses and individuals are opting for other top-level domain extensions. One of the most memorable is […]
When the SNES launched back in the early 1990s, it changed gaming forever. One of the innovations was a gamepad with four action buttons — something that has remained a constant on controllers ever since. The 8BitDo SN30 Bluetooth Gamepad brings that iconic design up to date, with Bluetooth connectivity and support for multiple platforms. […]
After a long day at work, cooking a meal from scratch can seem like too much trouble. Unfortunately, the alternative is usually something unhealthy. Enter the Mellow Sous Vide Precision Cooker. This compact water bath uses cutting-edge technology to cook meat and veggies at the perfect temperature for exactly the right amount of time. It […]