this post was submitted on 06 Feb 2026
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Science Memes

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top 11 comments
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[–] marcos@lemmy.world 22 points 1 day ago (1 children)

Just to point out, because it's bothering me way more than it should...

But the electric and magnetic peaks align with each other's valleys, not with each other's peaks.

[–] FishFace@piefed.social 3 points 10 hours ago (1 children)

If two waves of the same frequency align with each others' valleys, they align with each others' peaks. Do you mean they should be aligned peak to valley? I don't know how you're deciding which direction of the axes is positive and which is negative though.

[–] ChaoticNeutralCzech@feddit.org 1 points 2 hours ago (1 children)

The above comment should have said "the other's valleys", not "each other's valleys" but most will get that.

[–] FishFace@piefed.social 1 points 2 hours ago
[–] Remember_the_tooth@lemmy.world 9 points 1 day ago (2 children)

I get the reference to the original meme. I don't understand the EM spectrum component, though.

[–] deranger@sh.itjust.works 19 points 1 day ago (1 children)

They wish they were in an antenna and going out as radio waves, but instead they’re in a dummy load. 50ohm is a common antenna impedance.

[–] hedgehogging_the_bed@lemmy.world 5 points 1 day ago (1 children)

Had to go get my radio-tech spouse. His reply "Oh, that's the dumb name for a terminator...."

Apparently "dummy load" isn't what they call them in the USAF

[–] einfach_orangensaft@sh.itjust.works 1 points 19 hours ago (1 children)

i might be wrong here but i think a dummy load is different from a terminator, they both 50 ohm, but a terminator is more like a connector cap, while a dummy load is designed to dissipate heat and can often take many watts of power over extended time without starting glow

[–] Eranziel@lemmy.world 1 points 38 minutes ago

That's my understanding as well. I've seen dummy loads used when testing transmitters at power so that nothing gets too hot. They usually have a big aluminum heat sink.

[–] BillyClark@piefed.social 3 points 1 day ago

They can't wait anyways because they do not experience the passage of time.