Laser fence
A laser fence or laser wall is a mechanism to detect objects passing the line of sight between the laser source and the detector. Stronger lasers can be used to injure entities passing the laser beam.
A laser fence or laser wall is a mechanism to detect objects passing the line of sight between the laser source and the detector. Stronger lasers can be used to injure entities passing the laser beam.
A laser fence or laser wall is a mechanism to detect objects passing the line of sight between the laser source and the detector. Stronger lasers can be used to injure entities passing the laser beam.
Source: Wikipedia "Laser fence" · CC BY-SA 4.0
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