[Uwe] came up with a much more technical means of building a Fresnel reflector that will cook your hot dogs in seconds, but only on sunny days. [Uwe] channeled a little bit of [Apollonius] when ...

Fresnel lenses are specialized optical components with grooved surfaces instead of traditional curved ones. Owing to their unique design, Fresnel lenses are thin and lightweight, typically have short ...

Making a glass Fresnel lens with its concentric rings requires even more work, but as the ever-resourceful [Robert Murray-Smith] shows us, a Fresnel lens can be made from far more mundane materials.

Find 21 Fresnel Lenses suppliers with GlobalSpec. Our catalog includes 105,700 manufacturers, 20,972 distributors and 94,427 service providers. The GlobalSpec database includes 62,201 manufacturers ...

Pronounced "fraynel zone." The pattern of electromagnetic radiation that is created by a transmitting station from its antenna to receiving antennas. It is in the shape of an ellipsoid, or 3D ...

Can the "Delayed Choice Quantum Eraser" retroactively change decisions in the quantum world? A look at wave-particle duality ...

The new Vive Focus Vision, which was announced on Wednesday, is a fair bit larger and $1,000 less expensive than that system.

Meta has finally revealed its latest headset, Quest 3S. Although it retains some of Quest 2’s flaws, it creates much needed ...

Meta's midrange VR headset is the go-to head-mounted display on the market. Meta's cheapest VR headset offering offers a lot of bang for your buck.

Multiple bullets containing a tiny spectrometer could be shot into the lunar soil by an astronaut or rover, allowing analysis ...

Although Meta Connect 2024 lacked a marquee high-end product for the holiday season, it still included a new budget VR ...

The Quest 3S has the Quest 3 processing power with the Quest 2 optics. It still does color passthrough, though. Also, the ...