Real-time ray tracing is creating impressively realistic video game graphics. It uses powerful chips to calculate how millions of light rays reflect in a scene
Source: https://www.newscientist.com/article/2198866-stunningly-realistic-video-game-visuals-made-by-simulating-light-rays/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home