Submission + - No-blood method for adding magnetic sense
Bill Bumgarner writes: "You can feel magnetic fields and the like without taking a knife to a finger.
Just rip apart a hard drive and grab the head park magnet (if there is one — might have to rip apart more than one drive! Fun!). Tape it to your finger. Very faint, but works. You can also use a "magnetic wedding band", which some companies sell, to detect fields off of transformers quite easily.
Write up with pictures here: http://www.friday.com/bbum/2007/03/27/magnetic-fin ger-a-sixth-sense/"
Just rip apart a hard drive and grab the head park magnet (if there is one — might have to rip apart more than one drive! Fun!). Tape it to your finger. Very faint, but works. You can also use a "magnetic wedding band", which some companies sell, to detect fields off of transformers quite easily.
Write up with pictures here: http://www.friday.com/bbum/2007/03/27/magnetic-fi