Grant Thompson, the self-proclaimed King of Random, recently built his own solar death ray using a light-focusing Fresnel lens scavenged from an old rear-projection television. The Fresnel lens was used inside the TV to help focus the light beam that "draws" the image on the screen. Grant mounted the lens on a swivel and built a holding platform at its focal length. Voilà — instant solar death ray.
Check out Grant's death ray in action in the videos below. The first one shows how he built it, the second just shows him burning stuff. Both are awesome.
The opinions expressed by MNN Bloggers and those providing comments are theirs alone, and do not reflect the opinions of MNN.com. While we have reviewed their content to make sure it complies with our Terms and Conditions, MNN is not responsible for the accuracy of any of their information.