Hyperloop One engineers demonstrate the power of maglev using spinning arrays atop a copper plate. Despite weighing over 100 pounds, the gadget floats and could hold considerably more weight.
Obviously this "quadcopter" is a demonstration device, showing how moving magnets over a conducting surface can generate levitation. It has not been optimized to minimize losses or be an efficient mode of transport. I still think it's pretty cool. I'm used to seeing light things levitated by induced currents but not a 100+ lb machine.
He does a great job of showing how the mechanics work, and he demonstrates another form of maglev that gets extremely hot. All very interesting!
• Electromagnetic Levitation Quadcopter (YouTube / Veritasium)
Chinese researchers demonstrated quantum entanglement at a record distance, between a satellite and ground stations 1,200 kilometers apart. When objects are quantum entangled, their quantum states are linked. Measuring the state of one affects the state of the other. It’s weird shit. So weird that Einstein called it “spooky action at a distance.” The experiment […]
Here’s a good video that describes the laws of thermodynamics in an intuitive way, and why perpetual motion machines won’t work.
Now and then I stumble upon a book that completely blows my mind. The latest of such lucky encounters has been with Seven Brief Lessons in Physics by Carlo Rovelli. Carlo Rovelli is an Italian theoretical physicist with a solid, international academic career, presently teaching at the University of Aix-Marseille in France. In 2013 he […]
Aside from specific apps needed for work, the most casual Mac users can probably survive without anything more than the bundled software. iLife is a surprisingly capable office suite (Apple even promotes Keynote as a tool for interface design), and recent versions of Safari are more energy efficient than any other macOS-compatible browser. But if […]
Despite the upfront cost, electric toothbrushes are much better at removing plaque than those freebies from the dentist’s office. For those who struggle to fill the American Dental Association’s recommended two minutes of brushing time, or anyone with limited dexterity, a sonic toothbrush can give your oral care routine a boost.To keep your chops healthy […]
Learning a new language will give your resume an upgrade, sure, but it will also provide a huge cognitive boost for mental tasks outside of translation and conversation. Bilingual brains have been shown to be better at handling multiple concurrent tasks, and gaining fluency in a new tongue is an amazing way to improve memory, […]