The mapper is a spectrometer, a device that measures reflected light wavelengths.

VOA: special.2009.09.30

The Mapper is a spectrometer, which measures reflected light wavelengths.

VOA: special.2009.12.30

It uses a small spectrometer to bounce infrared light off particles in the sample.

ECONOMIST: Anti-IED technologies

Because the rims of these craters catch rays of light from the sun, this may provide sufficient illumination for the spectrometer to detect frozen water.

ECONOMIST: Astronomy

For more ambiguous types of waste, such as a piece of plywood with nails driven through it, the robot uses a spectrometer to recognise objects based on the unique patterns of light they reflect.

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