Salt Water Powered Paper Lights
Simple science crafts are always fun to create, and can be something of a marvel to adults - but if you've got a child to do them with you, to them science can seem like straight up magic. So if you're looking for a neat way to spend your afternoon, or have a child you'd like to impress, I've got just the craft for you to try out. Why not make a paper lamp, powered by salt water? It's a neat idea, isn't it? Using a few simple supplies - namely, some construction paper, copper and aluminum wire, an LED bulb, and some salt water, you can make a nifty little lamp. (Alternatively, I hear you can use lemon juice in the place of salt water to produce the same effect.)
Imagine a paper flower, with each petal having two wires running through it, and an LED bulb in the middle, where the petals meet. The salt you're applying to the wires causes them to oxidize, releasing a tiny electrical charge. The water by which you dampen the petals gives that charge a pathway by which it can travel back to the LED light. The neat thing about this lamp is that it will run for as long as it takes the petals to dry up - so you can expect 2 hours of light at a time. It can't last forever, of course, (because, despite my best efforts, apparently perpetual motion machines just can't be a thing), and eventually the wires will become to oxidized to continue lighting the bulb. You can use them for your next little craft. In the mean time, you're going to look pretty clever, either to yourself or to your admiring young companion, and you'll get a little hands-on science experience. Plus, bonus lamp.
Visit the 'Instructables' website below for complete instructions.
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