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Sign language is just radio communication but on another frequency (lemmy.world)
submitted 1 year ago* (last edited 1 year ago) by wipasoda@lemmy.world to c/showerthoughts@lemmy.world
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Because you use light to communicate in sign language, and light is just an electromagnetic wave like radio but on another frequency. You just need to be in line of sight

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this post was submitted on 19 Jul 2023
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