Mildly Interesting

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Shining a light behind this metal credit card. (lemmy.world)

submitted 4 weeks ago by violentfart@lemmy.world to c/mildlyinteresting@lemmy.world

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[–] Imgonnatrythis@sh.itjust.works 7 points 4 weeks ago (3 children)

Any reason it's a staircase instead of just a simple. Straight line?

[–] ch00f@lemmy.world 10 points 4 weeks ago (1 children)

I believe that minimizes capacitance. My question is why diagonal at all. Maybe it helps with adhesion during the manufacturing process?

[–] piecat@lemmy.world 2 points 4 weeks ago

Capacitance between turns, specifically. Provides e-field shielding too.

[–] Evil_Shrubbery@thelemmy.club 2 points 4 weeks ago* (last edited 4 weeks ago)

~~It's an antenna & it needs to be a certain length - making it a bit gay just adds enough pizazz (length) and it's the ez thing to do from a designers pov.~~

Oh, no, the metal ones do in fact use the metal as an antenna?? Can't really tell (but I would guess not).
yt/wyj7r_C51UU&t=115, yt/P5aszRLpa3Y

I though it was like this:

So the pattern of the cut is maybe structural (harder to bend with the plastic inside it bcs it's longer?) or just perhaps a CNC simplification.