Learn How to Make a Powerful Parabolic Mirror That Can Burn Wood
This parabolic mirror isn’t quite as strong as the enormous mirrors on the world’s largest telescope
but it can still be used for heating, cooking, and casually turning wood black and smokey. Plus, this version is made using the “space blankets” found at many stores and not fancy class from a Japanese company.
via Gizmodo http://ift.tt/29At7TA