this post was submitted on 19 Jul 2023
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Showerthoughts

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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.

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Sign language is just radio communication but on another frequency (self.showerthoughts)
submitted 1 year ago* (last edited 1 year ago) by wipasoda to c/showerthoughts
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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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[–] [email protected] 3 points 1 year ago (3 children)

That’s just what the acronym means, it doesn’t describes the actual process. I don’t think there is a single RADAR that doesn’t have a transmitter. At that point it would just be a… radio.

[–] Atrabiliousaurus 18 points 1 year ago (2 children)
[–] [email protected] 2 points 1 year ago (1 children)

Fair enough, though I would argue that’s a very specific subtype of radar and anyone saying “radar” refers to the type that is used in 99.999% of the cases.

[–] Atrabiliousaurus 3 points 1 year ago

Yeah probably true. I only thought to look it up because I knew active and passive sonar was a thing.