If we had other sense organs altogether, like infra-red detectors or echo-location devices, we can barely imagine how things would appear to us.
He'll fit you with the latest in Japanese-made static infra-red detectors.
Monitored areas that are large relative to objects of interest often require multiple sensors (e.g., infra-red detectors) at multiple locations.
Early infra-red detectors had poor sensitivity, so could only track the hot exhaust pipes of an aircraft.
At the front is the seeker, either a radar system, radar homer, or infra-red detector.
However, two families of snake have also developed such sophisticated infra-red detectors that they can effectively "see" their prey in total darkness.
The resolution of the infra-red detectors is much poorer than that of the eyes, and so the heat image is rather crude.
The rattlesnake is a more formidable enemy, because it has infra-red detectors to see in the dark and makes virtually no noise as it glides along.
Heat-sensing passive infra-red detectors with a fifty-feet range.
One was crystallization experiments which produced 47 grams of cadmium tellurium mercury semiconductors for use by infra-red detectors on board the station.
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