A man and woman sat before an electric eye in a London laboratory tonight and a group of people in a darkened room in this village outside New York watched them turn their heads move from side to side.
Source: wiktionary
Electric eye
Synonyms for "electric eye" (5 found)
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4 entriesSample sentences
3 total sentences available.
Another frequently cited possibility is a system of electric eyes reading beams of light that are aimed along tracks so that any displacement of the rails would disrupt the beam.
Source: wiktionary
The doors have electric eyes: "If you're carrying large specimens or carts full of plants, the electric eye beam is broken and the door opens up."
Source: wiktionary