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.

Exploring the evolution of LED lighting in cinematography, from red light solutions to the challenges of achieving deep blue ...

If you are a Hackaday reader, you probably know what a Fresnel lens is. You find them in everything from overhead projectors to VR headsets. While it seems commonplace now, the Fresnel lens was an ...

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 ...

This doctrine says that if doing something morally good has a morally bad side-effect, it's ethically OK to do it providing the bad side-effect wasn't intended. This is true even if you foresaw ...

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 ...

Investopedia / Ellen Lindner The Hawthorne Effect is the supposed inclination of people who are the subjects of an experiment or study to change or improve the behavior being evaluated only ...

You want an affordable VR headset At just $299.99 / £289.99 / AU$499.99, and with solid specs, the Meta Quest 3S is the best ...

In a notable exception, high-frequency radar-based measurements by Haus (Reference Haus2007) also considered the effect of lateral shear current on fetch-limited growth of wind-wave energy. A ...

If the Apple Vision Pro’s eye-watering £3,499 price tag has got you questioning the affordability of mixed reality tech, ...