Compact Laser Source Detects Pollution

A middle infrared light source can detect greenhouse and other gases as well as molecules in a person’s breath. The compact system, which resembles a tiny suitcase, contains just two parts: a standard...

Rapid Agent Aerosol Detector for Biological Agents

Any space, enclosed or open, can be vulnerable to the dispersal of harmful airborne biological agents. Silent and near-invisible, these bioagents can sicken or kill living things before...

Method Measures Temperature Within 3D Objects

Engineers have remotely determined the temperature beneath the surface of certain materials using a new technique called depth thermography. The method may be useful in applications where...

Hyperspectral Cameras and Data Quality

Any hyperspectral system needs to maintain a stable and accurate radiometric and spectral calibration.