In B is for Battery, Lady Ada showed us how to make lemon batteries and why it works. Alternately, though, any citrus fruit can work. This 14-hour exposure by Caleb Charland shows the light generated by a single LED inserted inside an orange. The chemical reaction between the nails and the citrus fruit surrounding them powers the warm glow of the photo. via petapixel.
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wow so great…nice article!! keep it up..