minus-squareWandering_Uncertainty@lemmy.worldtoLemmy Shitpost@lemmy.world•Stucklinkfedilinkarrow-up0·3 years agoBecause in^2 is generally said “square inches.” So it’s “pounds per square inch.” Sometimes “per” will get its own letter, like in PPM - parts per million - and sometimes it’s left off, as in PSI. linkfedilink
Because in^2 is generally said “square inches.”
So it’s “pounds per square inch.”
Sometimes “per” will get its own letter, like in PPM - parts per million - and sometimes it’s left off, as in PSI.