electromagnets
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Biofeedback anti-stress pen: a great idea that's not so great at reducing stress
We've all known for quite some time that the pen is mightier than the sword, and now science has given us a pen that is mightier (sort of) than the stress of that TPS report your boss needs right now. A student at Delft University in The Netherlands will receive his PhD this week for research that led him to create just such a pen. Based upon the obvious premise that people play with their writing utensils when anxious, the pen uses motion sensors instead of more conventional means of stress detection. When the pen detects stressful movements, internal electromagnets provide corresponding counter-motion feedback to stop your nervous tics. During experiments, the pen did diminish test subjects' heart rates around five percent, but according to feedback none of them actually "felt" less stressed. The pen isn't yet commercially available, and given its dubious value as an actual stress reliever, we would look to more satisfying methods to aid the relaxation process.
Electromagnetic can crusher can crush cans
Sure, we know you and your toga-wearing fraternity brothers are plenty good at smashing "beverage" cans against your forehead, but haven't you ever wanted to crush those cans using something with a little more... power? Enter the electromagnetic can crusher, a device which stores energy in a bank of capacitors, and then releases it in a quick -- yet powerful -- burst of pressure. Some folks out there on the internets have lovingly posted their experiments (perhaps so that other can-crushing aficionados can follow in their footsteps) complete with warnings like "This device involves extreme voltages, possibility of fire, explosion, violent ruptures of components and other risks." Sounds like fun, right? Hit the links and read all about it.[Via Hack a Day, thanks chainofcommand02]
