Make:

• DIY Halloween - The Classics :: Fog Chiller
• BUG on Arduino action
• NoiseBridge: new SF hacker space
• Pedal powered tank
• BASE jumping with accelerometers
• Self-disinfecting toilet brush

I find these "fruit-powered" projects often disguise the creation of energy more than they reveal it. The energy is really stored in the two metal prongs with the lemon just acting as a soup into which they melt. We don't say that our walkman runs on battery acid. We shouldn't be trying to tell people that these projects run on fruit. Especially if we're trying to teach anything about energy production and conservation.

Yep, I was about to post the same thing. The energy is already there in the metal. Another "artiste" fails 4th grade science. Not surprising.

I like how the apparatus looks like a miniature boob.

Does it come with a can of Raid to kill the bugs it will attract?

I see this as a nice example of both wastefulness and second-hand solar energy. That lemon was grown with sunlight, so it's essentially a living battery. But, that light also looks like a plastic thing that'll end up polluting the ocean and giving cancer to living organisms.

The lemon's not a living battery unless you eat it or light it on fire.

How often do you eat batteries or set them on fire?

BigD- That's pretty much the only way to get energy out of a lemon.

My car requires engine oil to run but does not run on engine oil. THIS PROJECT DOES NOT RUN ON LEMONS. THE LEMON IS NOT SERVING AS A BATTERY.

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