The virtual assistant in iOS can do all kinds of stuff, of course. But here are the 16 things we think everyone should try at least once.
In most vertebrates and some molluscs, the eye works by allowing light to enter and project onto a light-sensitive panel of cells, known as the retina, at the rear of the eye. The cone cells (for colour) and the rod cells (for low-light contrasts) in the retina detect and convert light into neural signals for vision.
I have blind spots in the sides of my vision, but I can detect light and movement in my far peripheries. The funny thing is that I don't actually see the blind spots. My brain has reconfigured my visual perception to skip over the blind spots, so things actually seem as if I have 180-degree vision.