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thermodynamics and basic mechanics suck in US units. When I was in school I did all my non symbolic work in metric and then converted back to metric in the end. It was too easy to miss points by being off by 32.2.
The golden engineering rule of "always carry your units through" breaks down in some instances for SI. Many places use mixed unit systems as customary. The reason why we don't switch is a good lesson in what drives adoption in my opinion: need and not just convenience. It would be a giant PITA for alot of industries and the upside is only slightly less annoyed technical staff. People dont care that much about annoying others slightly less. |
i'm still not 100% sure what a "Slug" is.
in college, our problems came at us in both flavors. the metric problems were a lot easier for sure. but i managed both. a miracle of sorts.. it would be very expensive to swap the USA over. california tried it (for projects), and backed out after a year of transition. |
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In medicine, there is a lot of metric. Doses are mg/kg, for example. As stated above, tires are in inches all over the world, go figure |
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I always thought it was funny that the tire width is almost always in mm but the rim size is inches. I have always wondered just how wheels are sold in China or Iran to local customers. Are those still sold in inches? |
wasnt' there a space mission that failed a few years ago because someone didn't carry the units out correctly in the formula? Didn't convert from Metric to English or vice versa?
I think the English lengths, inches, feet, yards, miles, makes as much sense as scoring in Tennis. |
They actually make a lot of sense
-The distance between your first and second knuckle on your index finger is an inch -A foot is a foot -An outstretched arm is a yard -Two outstretched arms from tip to tip is 6 feet -A span between outstretched pinky finger and thumb is 6 inches, or half a foot. It goes on... |
Hegemony. American.
It is sort of like biting your nose to spite your face. Is there a truly valid reason? |
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Right? |
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https://en.wikipedia.org/wiki/Gimli_Glider |
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One would think the little winkie crowd would be all for it ....afterall 4 inches is 10.5.....cm
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Just thinking out loud, what if we appoint the day as the basic metric unit of time and then do centi hours, milli hours etc?
Things would get a bit out of hand when seasons change every .356 kilodays It sounds a bit odd, but maybe because we are only so used to "non metric" time. |
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Nov. 10, 1999: Metric Math Mistake Muffed Mars Meteorology Mission | WIRED |
Years ago, my dad sent me to order some window sash for a pre revolutionary war colonial. I said to the fellow, I need to order some custom windows. He asked me how I knew I needed custom windows instead of a standard size. Well, I said, it's a pretty old house. Well, he said, it's a pretty old standard.
He was right, they were a stock size... |
Did ya ever notice that you snap that 10 mm socket onto a 3/8 ratchet?
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EDIT: I got that one wrong. Its supposed to be if you form an L with your thumb and index finger. |
For the same reasoning you think a slotted screw is better than a Robertson. :D
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