this post was submitted on 02 Sep 2024
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A graphic illustration of a right hand gently grasping a large arrow pointed diagonally upward. The thumb is up pointing in the same direction as the arrow. A smaller arrow underneath the hand indicates the direction to wrap the fingers around the large arrow. The title of the image is File:Right hand rule simple.png

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[–] mossy_@lemmy.world 53 points 10 months ago (4 children)

me when I'm trying to remember the rotation of magnetic waves created by a current in a wire

[–] midribbon_action@lemmy.blahaj.zone 11 points 10 months ago (1 children)

Last time I checked a moving charge created a magnetic field, not a wave. And you determine the curl, not the rotation. You didn't remember

[–] mossy_@lemmy.world 14 points 10 months ago

me when I'm trying not to let some nerd get under my skin because I struggled greatly with electromagnetics

[–] Valmond@lemmy.world 7 points 10 months ago

Those curved sin waves...

[–] breakcore@discuss.tchncs.de 4 points 10 months ago

If you know what I mean 😉

[–] glizzyguzzler@lemmy.blahaj.zone 3 points 10 months ago (1 children)
[–] mossy_@lemmy.world 5 points 10 months ago (1 children)

I don't get it, GlizzyGuzzler, is something strange about this image? Should I get off on this post?

[–] glizzyguzzler@lemmy.blahaj.zone 5 points 10 months ago (1 children)

You don’t remember the ol’ twist n’ yank method from your EE days??

[–] mossy_@lemmy.world 6 points 10 months ago (1 children)

the only twisting and yanking I did was pulling the wires out of my breadboard when I was done with it!

[–] glizzyguzzler@lemmy.blahaj.zone 6 points 10 months ago (1 children)

You’re missing out, it gets hot and heavy under the optics bench after lab hours

[–] mossy_@lemmy.world 5 points 10 months ago

I suppose they would turn the air conditioning off when everyone leaves...

[–] aldalire@lemmy.dbzer0.com 32 points 10 months ago (1 children)

I once used my left hand for the right hand rule because i was writing with my right hand during a physics test

Needless to say, i got the wrong sign

[–] Successful_Try543@feddit.org 7 points 10 months ago

You may use the left hand, if you use the technical direction of current from '+' to '-'.

[–] affiliate@lemmy.world 19 points 10 months ago

why even use the right hand rule when you can just take a random guess and be right half of the time

[–] kubica@fedia.io 19 points 10 months ago (1 children)

It is funny that this gestures are taught as some kind of mnemonics, but then some for some other application another mnemonic with the opposite hand and same gesture is introduced and I don't ever remember which hand was associated with what anymore. So I remember something about hands that doesn't get me anywhere.

[–] superb@lemmy.blahaj.zone 3 points 10 months ago (1 children)

I believe 3D graphics uses both to describe different coordinate systems (some are left handed and some are right)

[–] s_s@lemm.ee 6 points 10 months ago

Don't even get started with y-up vs z-up

[–] HEXN3T@lemmy.blahaj.zone 9 points 10 months ago

I have to admit that title is really clever

[–] CameronDev@programming.dev 8 points 10 months ago

The ol' twist and yank method

[–] SzethFriendOfNimi@lemmy.world 6 points 10 months ago (1 children)

Who would ever use this?

Atomic spin and chemical bonds have entered the chat

[–] Successful_Try543@feddit.org 5 points 10 months ago

Or angular momentum.

[–] SpaceNoodle@lemmy.world 5 points 10 months ago

Sudden HHGttG vibes

[–] jabathekek@sopuli.xyz 4 points 10 months ago

...torsion.

[–] beetsnuami@slrpnk.net 4 points 10 months ago

Haha, a reference to Hitchhiker’s Guide to the Galaxy!

[–] 5oap10116@lemmy.world 2 points 10 months ago* (last edited 10 months ago)

No thanks. I prefer the 3 variable left hand rule.

[–] moosetwin@lemmy.dbzer0.com 1 points 10 months ago