Looks like you screwed with the wrong old man today, punk. I may look grey and infirm, but I'm packing a million volts of incapacitating, jaw-clenching self-defense. Or offense! This grandpa's crazy! The Zap Cane also has a flashlight. Beware! »
In this week's Gizmodo University: Discover Electronics, we're diving headfirst into the principle theories of electronics. The second of four classes in this series, "Volts, Amps, and Ohms" is presented in conjunction with Sparkle Labs. »
[Cue Fairytale music...]Once upon a time, a geek found that he had way too many gadgets, and too few AC outlets to use them all at once. A simple powerstrip would have been a easy fix, but because he considered himself a serious gearhead, he wanted *special* powerstrip.
Researchers at Rensselaer Polytechnic Institute and MIT have developed a battery that uses carbon nanotubes and paper to make a flexible battery that can be cut by scissor and could eventually be printed. The energy density is fair, at about 110mAh/gram, and small prototypes are powerful enough to power small fans.… »