That characteristic - adjusting to the environment - can be logically reversed and used for sensing. • Devices using the chip can be designed so that a variety of different properties can be sensed.

Most spectrometers for satellite-supported remote sensing of the atmosphere are passive instruments. They register the sunlight reflected back and scattered into space by Earth's atmosphere. Spectral ...

Similarly, with the introduction of the laser in the early 1960s, exhibiting its extremely disciplined propagation characteristics, active optical scanning is typically of the laser beam, identified ...