A device produces green light while a researcher in lab gear stands in the background. This OLED device, which is held by a mechanical support, is producing circularly polarized light. Credit: ...

Photoplethysmography (PPG) is an optical sensing technique that measures blood volume changes and underpins devices ranging from hospital-grade pulse oximeters to consumer wearables that track heart ...

How to get rid of reflections in car photos using a polarizer. This video is to show you the actual process of putting together multiple frames or "layers" in photoshop to create a beautiful image. dm ...

The Light Bowgun can fire ammunition by hitting or holding R2 (RT). You can change your ammo type by holding L1 (LB) and hitting either Triangle (Y) or X (A) to cycle through your available ammo types ...