Potato Battery Driven LED

So, if you looked at my profile you would see that I like physics.  When the challenge for “Potatoes” I just knew that I need to do a project that highlighted the lowly “Potato Battery”.  So here is how to make a Potato Battery and have it light an LED light.Step 1i Supplies: Potatoes Galvanized nails Shinny copper pennies Wires with alligator clips on each end (2+ per battery) LED bulb Multi meter Knife Cutting boardStep 2i A battery is a way to store electrical energy.  For a battery to work it needs to have 3 things, two electrodes (metals, one + and one -) and electrolytes (minerals).  The batteries we are...

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How to See in The Dark

If you want to be able to see in the dark you can pick up a maglite and shine it every where you want. But if you don't want other people to know you are there you have to figure out an other way to be able to see using a lightbeam others can't see. in otherwords build your own night vision scope. what do you need: - a viewfinder from an old camera. - an old 380 line black and white camera - six Infrared LED's - three 15 ohm resistorsStep 1The viewfinderi The viewfinder I used for this night vision scope. Was taken from a CANON UC4000 V8 Camcorder. The Camera was broke but the viewfinder is stil very usefull. The viewfinder used to...

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