What's the retinal resolution of the human eye, or how many pixels can we actually perceive? And is there any point in ...

Is your ultra-high-definition television really worth it? Do you need a 4K or an 8K screen to get the best viewing experience at home?

A fancy new ultra–high–definition television might seem like a great investment. But scientists say that you might be wasting your hard–earned cash. According to a new study from the University of ...