Asklemmy

43770 readers

1392 users here now

A loosely moderated place to ask open-ended questions

Search asklemmy 🔍

If your post meets the following criteria, it's welcome here!

Open-ended question
Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
Not ad nauseam inducing: please make sure it is a question that would be new to most members
An actual topic of discussion

Looking for support?

Looking for a community?

Lemmyverse: community search
sub.rehab: maps old subreddits to fediverse options, marks official as such
!lemmy411@lemmy.ca: a community for finding communities

~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~

founded 5 years ago

MODERATORS

469

Does each language have "lefty loosey righty tighty"? (lemmy.world)

submitted 3 weeks ago* (last edited 3 weeks ago) by vatlark@lemmy.world to c/asklemmy@lemmy.ml

313 comments fedilink hide all child comments

The world has a lot of different standards for a lot of things, but I have never heard of a place with the default screw thread direction being opposite.

So does each language have a fun mnemonic?

Photo credit: https://3.bp.blogspot.com/-Giy8OrYJTjw/Tfm9Ne5o5hI/AAAAAAAAAB4/c7uBLwjkl9c/s1600/scan0002.jpg

you are viewing a single comment's thread
view the rest of the comments

[–] wuphysics87@lemmy.ml 37 points 3 weeks ago* (last edited 3 weeks ago) (3 children)

The Right Hand Rule (RHR). Point the thumb of your right hand in the direction you want something to go. Curl your fingers. That is the direction of rotation. Translate to any language which has hands.

[–] arefx@lemmy.ml 11 points 3 weeks ago (1 children)

I guess I'm an idiot because I don't understand lmao

[–] isyasad@lemmy.world 11 points 3 weeks ago (2 children)

Your thumb is an arrow pointing at where you want the screw to go. After you curl your fingers, your fingers are arrows showing the direction to turn the screw

[–] Instigate@aussie.zone 6 points 3 weeks ago (1 children)

We were taught a similar trick in physics - point your right-hand thumb in the direction that current (or electrons, same same) is travelling and the curling of your fingers shows the direction of the resultant magnetic field that the current creates.

[–] wuphysics87@lemmy.ml 2 points 3 weeks ago

I teach physics. A prof of mine taught me the right hand rule applies to right handed bolts. No accident they are named that. I teach this to students now. Maybe 1 in 10 like it. The rest prefer their old rhyme. Oh well. Can't say I didn't try

[–] arefx@lemmy.ml 3 points 3 weeks ago

Got it!

[–] Today@lemmy.world 3 points 3 weeks ago

I know how to turn a wrench. Knowing the direction is the difficult part. Especially on toilets.

[–] sunstoned@lemmus.org 1 points 3 weeks ago (1 children)

The only thing I don't like about this is the implication of a left hand rule for left hand threads, which makes my E&M physics brain sad

[–] wuphysics87@lemmy.ml 1 points 3 weeks ago (1 children)

Multliply bu -1. Same as with negative charge

[–] sunstoned@lemmus.org 1 points 3 weeks ago (1 children)

Right, for a paper physics problem. Try telling someone to multiply their hand by -1.

[–] wuphysics87@lemmy.ml 2 points 3 weeks ago (1 children)

Flip your hand over

[–] sunstoned@lemmus.org 1 points 3 weeks ago

pysic