Fresnel Lens

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Using a Fresnel lens to burn colored paper. White paper reflects more solar energy and does not ignite as easily.
Originally uploaded in Integrate:Teaching for Sustainability:InTeGrate Modules:Renewable Energy and Environmental Sustainability.

Image 119243 is a 1123 by 1290 pixel WebP
Uploaded: Jul26 16

Last Modified: 2016-07-26 15:14:38
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Randolph Chambers, College of William and Mary
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