Photoacoustic imaging (PAI) is an emerging tool that bridges the traditional depth limits of ballistic optical imaging and the resolution limits of diffuse optical imaging. Using the acoustic waves ...

Contrast ratio is the most important aspect of a TV's performance. More than any other single metric, a set's contrast ratio will be the most noticeable difference between two TVs. That is, if you ...

Contrast ratio, put simply, is the difference between the brightest a TV can be, and the darkest. More so than color ( quantum dots or otherwise), resolution ( 4K or otherwise) or other aspects of ...

Have you ever wondered why the picture on an OLED TV always looks so good? It may surprise you to discover that the punchiness of the images isn’t primarily due to resolution, colours or even high ...

The ratio of the brightest white to the darkest black on a TV or computer monitor. The larger the number, the greater the extremes; for example, car headlights can appear brilliant next to the pitch ...

Many U.S. hospitals are postponing scans used to diagnose diseases after a Covid lockdown in China hobbled the main U.S. supplier of an imaging chemical. By Reed Abelson Doctors cannot seem to ...