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What's a penny worth these days? Not much, but could there be some free energy hidden inside your spare pennies? You'd be surprised! Watch the video ...
US pennies that are newer than 1982 will work for both of these experiments, because they're nearly 98% zinc. For more information on US pennies, inc...
Here's a fun experiment! Pick up a calculator from the dollar store and remove the screws on the back so you can get to the battery. Remove it, and s...
The wires can now be connected to the correct battery leads that were pulled out earlier, and when you press the "on" button the calculator will fire ...
Here's another way to make the battery if you don't have access to zinc washers; Pick out 10 pennies newer than 1982, and use 100-grit sandpaper to s...
With the stack of 10 pennies, I attached a green LED and wrapped it all up with electrical tape in hopes to make it air-tight. I set it on my shelf...
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