The recording of the information contained in a modulated electron beam onto photographic or silicon resin-coated materials. A direct recording method involves the passage of the recording medium through an aperture in the cathrode-ray tube or over...

An enzyme-linked immunosorbent assay (ELISA) is a laboratory technique used to detect and measure the presence of specific...

1. The negative electrode of a device in an electrical circuit. 2. The positive electrode of a primary cell or storage...

Metrology is the science and practice of measurement. It encompasses the theoretical and practical aspects of measurement,...

Germanium crystal refers to a crystalline form of the element germanium (Ge), which is a metalloid and semiconductor...

Generally, any radiation that can form ions, either directly or indirectly, while traveling through a substance.

The process whereby a quantum mechanical system alters from one energy level to another. During this process, energy is...

An instrument designed to measure radiation indirectly through the use of several phosphors and a photomultiplier tube. The...

A term referring to various processes for forming visible images outside of a camera to be photographed on ordinary film....

Ray tracing is a rendering technique used in computer graphics to simulate the way light interacts with objects in a scene....

A term used to describe a nondirectionally diffusing surface that, when illuminated, appears equally bright from all angles....

The light formed by visible radiation that, in traveling from light source to object, undergoes one or more reflections. In...

An endoscope is a medical device used for visualizing and examining the interior of hollow organs, body cavities, or...

The production of visible light by infrared radiation whereby the light is produced by heat and not by any direct change in...

An energy transition concerned with the combination of a photon and a phonon.