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Catch a liar with a homemade polygraph test


Make A Lie Detector! - The most amazing bloopers are here

A polygraph or lie detector test records a subjects physiological responses while answer a series of questions. Do they tell necessesarily if somebody is lying? No. They do however notify the tester when the person exibits signs associated with the physical changes the occur when somebody is lying. This homemade lie detector isn't nearly as scientific as professional grade machines, nor are you a trained test administrator. Still, if you're looking to have a little fun, build a working polygraph machine and catch a lier then you'll enjoy this project.

The circuitboard assembly looks fairly complicated. You'll need some understanding of electronics, but the video has a helpful diagram and instructions. The video also shows this homemade polygraph in action. It measures the skin resistance which goes down when the subject is lying. If you want to back up your test with some behavioral science, check out M.E. Williams post on How to catch a liar in the act. I wouldn't do anything drastic based on the results of a homemade test, but it does sound like a fun experiment. Maybe you'll find out what people really thought of your Thanksgiving dinner?

15 awesome uses for aluminum foil

pizza on aluminum foil
When I was growing up, my parents reused and recycled almost everything. All items were used until they were falling apart. My dad would wrap his sandwiches in wax paper until the paper was in tatters before he would use another piece. Plastic wasn't used much either in the house. Since we had every size Mason and Ball jar ever made for canning purposes and making jelly and jam, they were great for storing leftover food. If anything got stored on a plate, then aluminum foil was used to cover the plate. Nothing ever went to waste in our dirt poor household. The motto passed down to my 7 siblings and I was "waste not, want not!!"

I still use aluminum foil for almost everything. It is strong, durable, and efficient. It comes in all kinds of sizes now, not like when I was a kid and you had to tear off a tiny piece for a tiny item. Best of all, when it wears out, I just throw it in the recycling bin with the aluminum cans. I like it so much that I thought I would compile a list and share with you all the things to do with this handy item besides keeping food warm, so please join me after the break.

Continue reading 15 awesome uses for aluminum foil

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