Answer | Crossword Clue |
---|---|
RADARS | Speed-detecting devices |
SONARS | Sub-detecting devices. |
SENSORS | Heat-detecting devices |
RADARS | Devices detecting by sound echo. |
photodetector | any of various devices for detecting and measuring the intensity of radiant energy through photoelectric action |
photodetectors | PHOTODETECTOR, any of various devices for detecting and measuring the intensity of radiant energy through photoelectric action |