Every single day, we’re constantly looking at pixels. The tiny elements make up the displays on our phone screens and televisions, and allow us to capture images on digital cameras. Generally, a pixel works by either controlling light (think a computer) or analyzing it (like a camera sensor). Now, researchers writing in the journal Nature say they’ve created a pixel that can do both.
Called a Fourier pixel, the new pixel tech is based on a fundamental principle of physics: interference. When light is scattered by a surface, the waves can overlap with each other, even if they originated from different points. When two or more light waves overlap, they reinforce each other. If the light waves are o