this post was submitted on 01 Mar 2026
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Science Memes

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[–] HugeNerd@lemmy.ca 9 points 1 day ago (2 children)

Negative frequency is a concept in signal processing, and many other domains.

https://en.wikipedia.org/wiki/Negative_frequency

Phase could be the thing, beats me, it's been a while. Negative resistance is also another one of those concepts that pop up now and then, specifically negative differential resistance.

[–] BartyDeCanter@lemmy.sdf.org 3 points 1 day ago

Oh god, it’s been a long time since I took Vibrations and Waves, but I still remember filling notebook after notebook with Fourier transform equations.

[–] Glitterkoe@lemmy.world 3 points 1 day ago

I mean, the signs* are right there in the article

*something something sines