Abbreviated PAI. An imaging modality with a hybrid technique based on the acoustic detection of optical absorption from endogenous chromophores or exogenous contrast agents. Light is absorbed by the chromophores and converted into transient heating,...

An infrared light-emitting diode (IR LED) is a semiconductor device that emits infrared light when an electric current...

Any instrument or system carried by a balloon to the upper atmosphere to measure and record atmospheric information, such as...

A method of producing x-ray exposures as short as 0.03 µs; the primary application is in ballistic radiography.

An optical instrument containing a gimballed sighting telescope, used to measure angular relationships in horizontal and...

Rockwell hardness (Rc) refers to a method for measuring the hardness of a material, primarily metals, using an indentation...

A camera that uses multiple exposures to record the trajectory of an ordnance from a ground-level position.

A linear positioning stage, also known as a linear stage or translation stage, is a precision mechanical device used to...

A category of systems designed to communicate a photo taken from the air (e.g., aircraft, balloon, satellite) to a ground...

An area in which airborne particulates can be monitored and controlled so that given size particles do not exceed a...

An intensified charge-coupled device (ICCD) camera is an advanced imaging device that combines the capabilities of both an...

In a laser, the series resistance necessary for a stable electrical discharge.

Graphene is a two-dimensional allotrope of carbon consisting of a single layer of carbon atoms arranged in a hexagonal...

Molecules composed entirely of carbon, in the form of a hollow sphere, ellipsoid or tube. Also called buckyballs....