Just like destroying an ant colony with a magnifying glass ... [Uwe] came up with a much more technical means of building a Fresnel reflector that will cook your hot dogs in seconds, but only ...

What Fresnel did was quite unique. He realized that, in a simple plano-convex magnifying lens, its optical beam-bending properties ... A nice trick is to use a rigid piece of light aluminum sheet (say ...

The screws that go in your phone are minuscule, and a magnifying glass is really handy if you want to check out the detail on your 3D prints. While this is easy if you have good eyesight and you ...

The grill follows the same principle as a child who uses a magnifying glass to cook ants like popcorn. A Fresnel lens concentrates the sun’s rays onto a cast iron grill, heating it to frazzling ...

A proposed space telescope would focus light primarily with a patterned sheet of metal rather ... But Koechlin says a specially shaped lens – called a Fresnel lens – placed on the second ...