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5 tomatoes

Scheduled Pinned Locked Moved Lemmy Shitpost
lemmyshitpost
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  • G [email protected]

    If you want to convert between imperial units, going straight from feet to miles is impractical. You'd be better off knowing the chart of survey units, and they're all small numbers so they're easy to remember.

    12 inches in a foot

    3 feet in a yard

    22 yards in a chain

    10 chains in a furlong

    8 furlongs in a mile

    Of course, i know this because I do 3d art in blender and refuse to set it to metric.

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    wrote last edited by
    #190

    Of course, i know this because I do 3d art in blender and refuse to set it to metric.

    Did the metric system kill your family or something?

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    • C [email protected]

      “In metric, one milliliter of water occupies one cubic centimeter, weighs one gram, and requires one calorie of energy to heat up by one degree centigrade—which is 1 percent of the difference between its freezing point and its boiling point. An amount of hydrogen weighing the same amount has exactly one mole of atoms in it. Whereas in the American system, the answer to ‘How much energy does it take to boil a room-temperature gallon of water?’ is ‘Go fuck yourself,’ because you can’t directly relate any of those quantities.”
      ― Josh Bazell, Wild Thing

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      wrote last edited by
      #191

      It might be funny if it were true, but it's just a sad show of ignorance. It is exactly as possible in one as in the other for obvious reasons. It's just not as easy to memorize.

      To be specific:

      • energy required to heat to boiling point 1180 kJ
      • energy required to convert to vapor 8420 kJ
      • energy required to heat to boiling point and convert to vapor 9600 kJ
      C 1 Reply Last reply
      1
      • M [email protected]

        If there's a better base than 10, it is a power of two.

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        wrote last edited by
        #192

        Nah, highly composite number. A product of multiple primes. 10 is 2 and 5. A power of 2 is just multiple 2s. 12 gets you 2, 2, and 3. 60 adds a 5.

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        • T [email protected]

          Not in defense of the imperial system, but if you're curious why it's so arbitrary, it's a crazy story about untangling a ton of proprietary guild measurements. The mile itself isn't quite proprietary (it was defined as 8 furlongs, and you can blame the English for ruining a perfectly good roman measurement) but they needed to make it a certain number of chains, rods, yards, and feet, plus a few other obscure measurements I forget about. Naturally that results in a stupid conversation rate (mostly vs yards and feet since it was basically a different system).

          Why we still use it, dunno. I can see an argument for keeping feet and inches for things like carpentry (in the similar way I like hexadecimal in programming) but miles is not that. It's about as logical as this point as fahrenheit, which is to say it's outdated nonsense.

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          wrote last edited by
          #193

          To me, Fahrenheit is a lot like inches and feet for carpentry. As in it's fine for things like describing the weather and setting my house's thermostat. It mostly falls apart for must other things, though it's still okay for cooking and baking. From a scientific perspective, any temperature scale that isn't zero at absolute zero is nonsense, so it's pretty much Kelvin or bust.

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          • M [email protected]

            I don't think that was the idea when the second was created.

            The solar rotation cycle is naturally divided into 365 rotations of Earth (give or take), each daily rotation was divided into 24 segments called hours, each hour was further divided into 60 units called minutes, and each minute was then further divided into 60 units which we call seconds.

            In the modern era, we have refined how we measure a second by a very stable natural phenomenon, the emissions of cesium (which we also refer to as an "atomic" clock). But we got there first by dividing one of Earth's rotations by 86400. It just so happens that 9 192 631 770 oscillations from cesium also equals 1/86400th of one rotation of Earth.

            Additionally, neither a "second" nor even "one rotation of Earth" would have any meaning to someone who has never been to earth before.

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            wrote last edited by
            #194

            It doesn't matter how these units were originally defined. They have all been redefined as science progressed. As long as you relate the arbitrary unit to a constant it can be translated.

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            • G [email protected]

              If you want to convert between imperial units, going straight from feet to miles is impractical. You'd be better off knowing the chart of survey units, and they're all small numbers so they're easy to remember.

              12 inches in a foot

              3 feet in a yard

              22 yards in a chain

              10 chains in a furlong

              8 furlongs in a mile

              Of course, i know this because I do 3d art in blender and refuse to set it to metric.

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              wrote last edited by
              #195

              How do you do weight measurements? I noticed a lot of Americans use grams

              ebolapie@lemmy.worldE B G 3 Replies Last reply
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              • O [email protected]

                Most people who deal in imperial units know off the top of their head that 1/3 of a mile is 1760 feet. They don’t have to calculate it. After a while you see that number come up often enough and it’s committed to memory.

                I’m not saying that metric isn’t better, it is, and I wish we would hurry up and switch to it. I’m just saying that the numbers involved aren’t a handicap once you have worked with the imperial system for a while. If you have a set of sockets that you work with every day, you know instantly that 3/8” is bigger than 19/64”. Hell, even 5/16” is bigger than 19/64”.

                And, you must admit, 333 meters is not one third of a kilometer. It is one third of 999 meters. The number 5280, for all its awkwardness, is beautiful in the sense that it is evenly divisible by 12, Meaning that it can be exactly divided into quarters, thirds, or halves without a fractional part.

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                wrote last edited by
                #196

                How would you convert to e.g nautical miles?

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                • A [email protected]

                  It might be funny if it were true, but it's just a sad show of ignorance. It is exactly as possible in one as in the other for obvious reasons. It's just not as easy to memorize.

                  To be specific:

                  • energy required to heat to boiling point 1180 kJ
                  • energy required to convert to vapor 8420 kJ
                  • energy required to heat to boiling point and convert to vapor 9600 kJ
                  C This user is from outside of this forum
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                  wrote last edited by
                  #197

                  Nobody said impossible, just that you can't directly relate any of those quantities.

                  Can't we just agree that metric is superior?

                  A 1 Reply Last reply
                  2
                  • C [email protected]

                    How do you do weight measurements? I noticed a lot of Americans use grams

                    ebolapie@lemmy.worldE This user is from outside of this forum
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                    wrote last edited by
                    #198

                    We use both. Body weight is in pounds, but nutrition is in grams.

                    In general we use metric more for smaller, more precise weights and imperial for everything else. I don't think I've ever heard anyone measure anything except cocaine in kilograms.

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                    • C [email protected]

                      Nobody said impossible, just that you can't directly relate any of those quantities.

                      Can't we just agree that metric is superior?

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                      wrote last edited by
                      #199

                      But they are just as directly related.

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                      • A [email protected]

                        But they are just as directly related.

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                        wrote last edited by
                        #200

                        Ok, so rewrite the statement using imperial instead. Let's compare them.

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                        • C [email protected]

                          Its 2.54 cm to the inch. Its close to 2.5 and as an engineer in America I am stuck doing that conversion a lot

                          misterfrog@lemmy.worldM This user is from outside of this forum
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                          wrote last edited by
                          #201

                          If it makes you feel any better, most pipe standards around the world are based on the American system, as well as bloody valve coefficients.

                          I am far too aware that 1" is 25.4 mm 😞

                          And I'm in Australia. Grumble

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                          • H [email protected]

                            I’m always disappointed that megameter isn't a common word. People will say “one thousand kilometers” instead of just “one megameter”.

                            misterfrog@lemmy.worldM This user is from outside of this forum
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                            wrote last edited by
                            #202

                            I'll never forgive the French for going from grave to gram to kg as the base unit of mass.

                            All my other base units don't have a prefix 😞

                            Such a pity.

                            BRING BACK THE GRAVE

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                            • C [email protected]

                              How do you do weight measurements? I noticed a lot of Americans use grams

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                              wrote last edited by [email protected]
                              #203

                              Drugs are done in grams i think, methric

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                              • R [email protected]

                                Do you want to develop imperial measurements? Because that's how you invent imperial measurements. Next thing you know you've got a cup that's really good for measuring liquids and a couple spoons you like to scoop with....

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                                wrote last edited by
                                #204

                                We are talking about cutting vegetables maybe meat, the room for error is enormous...

                                R 1 Reply Last reply
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                                • R [email protected]

                                  Because your power is billed in kWh. Figuring out the kWh cost of a 77 watt TV is straight forward, but a lot of consumer labeling standards are about quick and easy side by side comparisons as opposed to perfect application of units. Easiest way to give a comparison that's accurate enough and doesn't involve odd numbers is to convert that way.

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                                  wrote last edited by
                                  #205

                                  Whilst this answer is correct, it's not entirely accurate, because it is dismissive of the root cause. The logical follow-up question is: "Why is energy billed in kWh?". If the question/cycle answer continues down this line there will probably be an answer like "because <some person> had to make a decision once, and they chose this because of <some reason>, and now we're all stuck with it because of convention."

                                  Anyone who doesn't understand what joules are probably doesn't understand what kWh are either. If the billing convention (and every other power consumption label) used joules (of course MJ or GJ) instead, then most people would just accept that as the unit of billing and measurement, and those who understand what the units mean would have an easier time of it.

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                                  • K [email protected]

                                    How many BTUs are there in a big mac?

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                                    wrote last edited by
                                    #206

                                    No acknowledgement at all that I literally just answered your question?

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                                    • F [email protected]

                                      No acknowledgement at all that I literally just answered your question?

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                                      wrote last edited by
                                      #207

                                      I see my trap was fallen into.

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                                      • ickplant@lemmy.worldI [email protected]
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                                        wrote last edited by
                                        #208

                                        Ya know what. I like that tomato shit to remember the conversion. I like SI far more than US customary tho

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                                        • C [email protected]

                                          How would you convert to e.g nautical miles?

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                                          wrote last edited by
                                          #209

                                          Oh, what’s interesting about a nautical mile is that it wasn’t originally even based on a number of feet or meters or whatever. It represented one minute of latitude (60 minutes in a degree type of minutes). Since the earth is an oblate spheroid instead of a perfect sphere, that meant that traditional nautical miles varied based on your position until they were standardized it in 1929.

                                          I think it’s about 1.85 kilometers, but I wouldn’t have occasion to do the conversion because I’m a landlubber.

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