What is this thing?

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What is this pair of metal... Things.. hanging on traffic light pole over an intersection? (infosec.pub)

submitted 13 hours ago by hereiamagain@sh.itjust.works to c/whatisthisthing@lemmy.world

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They were on all of them in the intersection, four sets

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[–] onnekas@sopuli.xyz 3 points 5 hours ago (2 children)

If vibrating like a guitar string is so bad then tell me why we don't install those things on guitar strings!?

[–] Rivalarrival@lemmy.today 5 points 5 hours ago

If you attached six of those dampers to a guitar, it would weigh about 240lbs.

[–] Michal@programming.dev 1 points 5 hours ago

Because one is installed on a guitar and the other one is not