Pixels

The term pixel is short for "picture element". A pixel is the basic unit of programmable colours on a computer display or computer images.  A pixel in a way is similar to an atom. It is the smallest piece in an image. The physical size of a pixel depends on the size of the resolution set on the display screen. The more pixels the better the resolution. The resolution of the human eye depends on how good the person's eyesight is. Scientists are estimating our eye resolution to be around 300-500 million pixels. So if we look at something it can be broken down in 300-500 million different pieces. These pieces are what make up the actual or big picture.

The following is an example of a pixel: