Randy Hoffner

One thing that television and the movies have in common is that both portray motion by capturing and displaying a series of still pictures, albeit in very different ways.

Previously, we have taken a look at how cesium clocks, the most-accurate time and frequency references available to us, work.

One of the opportunities created by the digitalization of television is the ability of digital media and transports to carry metadata in addition to video and audio.

The cathode ray tube that until recent years served as the principal television and video display device generates its own light.

Although aspect ratio has always been a factor in television, for many decades only one aspect ratio was available: 4:3. With apologies to accomplished punsters, that picture has changed.