Photonics Dictionary: A

Any photographic medium that, when chemically developed, produces an exact photographic reproduction of the original.

An accelerometer is a sensor or transducer that measures the rate of change of velocity of an object, or in simpler terms, it measures acceleration. Accelerometers are widely used in various...

The change in refractive index that occurs as acoustic vibrations are transmitted through an optical material.The index changes are periodic in relation to the frequency, spatial orientation, and...

The creation of topographical maps and charts from a stereographic record produced through the overlapping of consecutive aerial photographs by more than 50 percent.

An instrument designed to measure angles in azimuth; used in general topographic work and military gunnery.

A physical variable that is proportionally similar to another variable over a specified range. An analog recording contains data that is similar to the source.

Color vision whereby abnormal proportions of three colors are needed for color matching.

Having human characteristics or behavior.

An atomic absorption spectrometer (AAS) is an analytical instrument used to determine the concentration of specific chemical elements in a sample by measuring the absorption of light at...

An atomic force microscope (AFM) is a high-resolution imaging and measurement instrument used in nanotechnology, materials science, and biology. It is a type of scanning probe microscope that...

An autocollimator is an optical instrument used for measuring small angular deviations with high precision. It operates on the principle of autocollimation, where a light source is directed onto a...