Archive for the ‘fun experiments’ Category

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Edited Jun-10-2010

Acid can release electricity from metal.  What is an easy-to-find source of acid?   Tomatoes!

VIDEO

The video above shows how an LED and a buzzer are powered by a tomato battery.  It’s just two different metals dipped into mashed tomatoes.  It even helps charge a AAA battery.

How does this work?

Continue reading ‘Tomato Battery’ »

Posted by Earl on November 27, 2009 at 6:57 pm under chemical, energy, fun experiments.
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1 Comment.

Peltier-Cooler-captures-water-from-air

Can a Peltier cooler be used to extract moisture from the air using off-the-grid power?

Continue reading ‘Peltier Cooler as Dehumidifier Grows Ice Crystals’ »

Posted by Earl on September 30, 2009 at 12:23 am under energy, fun experiments, thermoelectric.
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7 Comments.

Many people have tried adding Mentos to Diet Coke for a fun explosion of foam. Does only Diet Coke work or can another beverage work as well? Could Diet Pepsi work with Mentos to make an eruption?

My two kids were interested in the experiment, so for fun, we tried making our own volcano with Mentos and Diet Pepsi. It works!

Posted by Earl on October 26, 2008 at 3:58 pm under chemical, energy, fun experiments.
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