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Forum: Preparedness/Survival Skills/BOBs/Kits/Gear 07-09-2014, 12:32 PM
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Posted By doc
If you covered the front, how would the light get...

If you covered the front, how would the light get in to provide the focused energy?

It's said that Archimedes used giant parabolic mirrors to set the attacking Roman fleet on fire, saving...
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