this post was submitted on 13 Oct 2024
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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?

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[โ€“] RBWells@lemmy.world 41 points 1 month ago* (last edited 1 month ago) (8 children)

You know this has always confused the fuck out of me. You are going around a circle, how is there left and right? There is up-and-left, down-and-left, either way is left. If I am starting on the right of the circle (assuming I'm looking at it) which way is right? Up or down?

[โ€“] Sludgeyy@lemmy.world 20 points 1 month ago* (last edited 1 month ago) (1 children)

Imagine it like a car steering wheel.

You'd say turning the wheel to the right turns the car right.

Think of it like this. Like your hand is holding on the top of the steering wheel.

[โ€“] Cataphract@lemmy.ml 8 points 1 month ago (1 children)

ok but what is behind this picture? I see fur and old matted flesh? a paw with no nails or an old dogs snout?!?!

[โ€“] MelodiousFunk@slrpnk.net 10 points 1 month ago

It's better to not ask questions sometimes.

backs away slowly

[โ€“] Zementid@feddit.nl 9 points 1 month ago* (last edited 1 month ago) (1 children)

Clockwise = Righty

Or imagine a bottle cap instead of a screw... Muscle memory kicks in.

[โ€“] RBWells@lemmy.world 4 points 1 month ago

Thank you! Clockwise looking down at a bottlecap makes sense!

[โ€“] angrystego@lemmy.world 9 points 1 month ago

The starting point is on the top.

[โ€“] Cethin@lemmy.zip 7 points 1 month ago (1 children)

This has always annoyed me too. I know why it works, but it's clockwise and counter-(or anti-)clockwise. If you were turning from the bottom, left and right are mixed up. Maybe it's just too hard to come up with a phrase using those terms?

[โ€“] Longpork3@lemmy.nz 6 points 1 month ago

Clockwise=lockwise

[โ€“] yonder@sh.itjust.works 7 points 1 month ago

I always think about the direction that the top of the circle turns to apply left or right rotation, though I usually use muscle memory.

If it was a wheel, which way would it roll if you turned it like that?

[โ€“] Krzd@lemmy.world 3 points 1 month ago (1 children)

It's the top part. So if you imagine a little dot at the top (12h) position it would move to the right/clockwise or left/anti-clockwise

[โ€“] Cethin@lemmy.zip 1 points 1 month ago (1 children)

Yeah, but once you get one quarter of a rotation through your dot is now moving left.

[โ€“] mbfalzar@lemmy.dbzer0.com 2 points 1 month ago

But the top is still moving right

Use right hand thumb rule. There is no right, there is no left, there is no clockwise or anticlockwise. All of them depend on the way you looks. Rught hand thumb rule fixes it for humans