MacGuyver detector?

[whiteknight38]

Here's a vid from a site caled "What would Macguyver do"
A homemade detector supposedly effective to 6 - 8 inches froma calculator and a couple of CDs

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[kierdan]

LOL too cool. I have no idea if it works or not but makes me want to mess around a bit haha. Kinda like the ads in the back of the old boys life magazines that said you could build a hoover craft with old vacuum cleaners. Always wanted to try.