Card trick
Interesting card trick using the Kruskal Count.
Interesting card trick using the Kruskal Count.
What we can do with brain scans today.
Phones can be used on flights. (from The Economist. Requires subscription)
On an average transatlantic flight, several phones are usually left switched on by accident, and the avionics systems on modern aircraft are hardened against radio interference. No, the use of phones on planes is banned because they disrupt mobile networks on the ground. An airliner with 500 phones on board, whizzing across a city, can befuddle a mobile network as the phones busily hop from one base-station to the next.
Xavier’s Institute of Communication offers some interesting arts courses.
I was trying to buy the Mathematical American but the server seems to have some problem.
Toilets of the world. The page has a section on futuristic toilets. I’ve used something like those when I was at Honda in 1998. Really nifty devices 🙂