My experience with fresnel lenses growing up was with the sheet magnifiers my grandmother would use to read; I could melt asphalt with them and it acted like my

My experience with fresnel lenses growing up was with the sheet magnifiers my grandmother would use to read; I could melt asphalt with them and it acted like my own laser beam. I always wanted to make one of these solar cooking apparatus stands but it was ... frowned upon ... by my parents: https://www.bealsscience.com/post/2016/10/04/solar-death-ray-cooking-with-a-fresnel-lens-from-a-projection-tv https://www.bealsscience.com/post/2016/10/04/solar-death-ray...