Hey! I got an idea! And I shot a bunch of photos with my smartphone. Remember the contemporary lens/filter I made out of a discarded smartphone screen parts (mainly the fresnel sheets) I found lying on

A very simple and boring Fresnel lens test, the lens was salvaged from an old rear projection television set...When angled proper one can get a super amount of heat where you can boil water cook food and

Steepshot | IPFS | Google Play

Fresnel Lens Solar Steam Engines vs. Bird Grillers | |