light valve

noun

: an electromagnetically operated device whose light transmission varies in accordance with an electrical quantity (as current) and that is used especially in recording sound on motion-picture film

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Dictionary Entries Near light valve

Cite this Entry

“Light valve.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/light%20valve. Accessed 15 Jun. 2024.

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