whatilearned
Read more: https://en.wikipedia.org/wiki/Anatomical_terms_of_motion#Pronation_and_supination
TIL That screws are “righty tightly, lefty loosey” because right handed people are more common and arm supination(forearm rotation outward) is stronger than pronation(inward) for right handed individuals. This way tightening bolts uses the most torque. This is why you’re left hand can loosen easier.
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[Link to how this relates to screws here](https://en.m.wikipedia.org/wiki/Clockwise#Usage) , but someone already submitted this link for a sundial and the bot blocked me from using it…
And also has a reason depending on direction of rotation of said fastener. If it applies counter clockwise force on fastener then you would just loosen the bolt rather than transfer power. A left handed thread would stay tigh and be able to transfer power. So it may be that as well
You know there are left hand bolts and its true either way always more strength turning towards your shoulder.
I’m curious not being be a dick. With you saying
“Supination is stronger than pronation for right handed people”
Does that mean that pronation is stronger for left handed people or did you mean regardless of preferred hand?
God damn never knew but shit makes so much sense