What's ray tracing? Here's everything you need to know

Although it's been around for a long time in the film industry, it's still a rather perplexing term, especially where video games are concerned. Essentially, it's a technique that makes light behave in a realistic way. The idea is to make games more realistic and immersive. Wouldn't you be spellbound by the light bouncing off of objects in a natural way? The indistinguishable line between reality and fantasy is no doubt appealing.