I’m always disappointed that megameter isn’t a common word. People will say “one thousand kilometers” instead of just “one megameter”.
How about kilo-klick?
People will say “one thousand kilometers”
Will they though? I don’t talk about distances that large anywhere near often enough to really need a shorthand for it, personally. Had to even look up what things are approximately 1000km apart to even know what to imagine it as (it’s about the distance between Paris and Berlin).
Yes, every time I’ve ever heard someone use metric to describe distances of >999km, they keep using kilometers.
Comes up a literal metric ass load (8 bushels) when your talking about travel in the USA.
We big
Car mileage (or kilometerage, is that a word?)
People don’t say the car has 200 megameter on the odometer, but 200 000 km. Or 200k km?..
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
“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
“High. You put the stove on high.”
I love this quote.
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
Nobody said impossible, just that you can’t directly relate any of those quantities.
Can’t we just agree that metric is superior?
But they are just as directly related.
Ok, so rewrite the statement using imperial instead. Let’s compare them.
The only metric to imperial conversion I remember is kilometers to miles since it’s pretty close to the golden ratio.
Even if you don’t remember that the golden ratio is 1.6 and a bit, you can approximate it by using successive terms of the Fibonacci sequence.
1, 1, 2, 3, 5, 8, 13 …
So 8 miles is about 13km (actually 12.87)
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
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
This has blown my mind
Fucking Dan Brown in the comment section
A meter is a Baker’s yard. 3 free inches!
I usually just go with 1.5 because adding half/subtracting a third is way easier to do in my head, and I’m not worried about a ~10% error in casual conversation.
2.2 pounds per kilogram. For a rough conversion just multiply or divide by two. For a more precise conversation do the same thing, then wiggle a decimal and do it again.
The only positive thing I see about imperial is that things are easily divisible by 3 and 6, but that’s about it. Then again, if doing the same with metric, you’re usually fine rounding to the nearest millimetre, and if that isn’t accurate enough, it’s probably not supposed to be done by hand anyway.
I’ve banged on about this at length before. I prefer woodworking in inches because I have to divide by 3 and 4 a lot more often than divide by 5. It turns out that the fractional inch system evolved alongside woodworking for a very long time and it solves a lot of the problems woodworkers actually face…as long as you’re not a European scraping in the dirt for something to feel superior about.
It’s funny how the biggest argument for metric is that it’s so accurate but in real life use it degrades to “close enough”. My main problem with metric is that I can’t get my pencil that sharp.
It’s accurate when you need it to be and gets out of the way when you don’t. And if you do need the accuracy, you have a unit that doesn’t need fractions.
The biggest argument for metric is that it’s consistent. It takes 1 calories to heat 1k of water by 1 degree. State something similar in imperial units.
1 BTU heats 1 pound of water 1 degree Fahrenheit.
How many BTUs are there in a big mac?
No acknowledgement at all that I literally just answered your question?
I see my trap was fallen into.
And isn’t 1kg of water 1L? And 1L is 1000 cubic cm? So a 10x10x10 cube?
100 degrees out is 100% hot. 0 degrees F is 0% hot
Most standard measuring tapes have 1/16th of an inch as the smallest fraction on the tape. 1mm is 1/32nd Which is one is “close enough”? Lol
Edit: 1/32, not 1/64
Way off! There are 25.4 millimeters per inch, not 64, and most measuring tapes have 1/32" markings.
Haven’t had my coffee, you’re right it’s closer to 1/32.
Most measuring tapes in US don’t go smaller than a 1/16th though.
How is “accurate” an argument?? You can use any unit with any amount of decimal places. The argument is that it’s regular. You learn the prefixes once and apply them to length, volume, weight, …
the only thing more aggravating than using imperial is having to listen to all the complaining about how metric is better. We get it, bro; it’s out of our control at this point
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.
Remembering 12, 3, 22, 10 and 8 does indeed sound way easier than remembering 1000.
I know right? it’s such an intuitive system with a convenient unit for every scale you might want to work with.
I genuinely can‘t tell if you are being serious. Could you tell me at face value, I just want to know.
I don’t know glitchdx from Adam, but I say with confidence that they were being sarcastic, and laying it on pretty thick.
yeah, it sucks. There’s no actual case for imperial over metric. it’s just what I’ve spent years getting used to and I’m not changing now.
The imperial units were created for practical every-day measuring, so if you know how to apply them, they still hold up to the task. Just more difficult to use for large data sets like architectural models etc.
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?
Of course, i know this because I do 3d art in blender and refuse to set it to metric.
You monster.
The dark side can be a pathway to many abilities some might consider … stupid.
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.
Arguing with the imperial system is like arguing with my mother. She knows her ways and methods are insane, but she will try to explain why she needs each of those eight furlongs. Either ADHD will steal her ability to finish the explanation or the audience will perish from exhaustion. And she still will be the smartest person in the room.
You don’t have to use it though. Reject it.
In traditional carpentry inches and feet make sense because of the high divisibility. We don’t get as much benefit from that now though.
We still use hex with computers because that’s what they’re made using (rather binary, but hex is just a natural group of binary digits). The usage of binary is ultimately more grounded in the objective than the usage of base 10 in the SI system. Nature dictates the relationships between the units, but we pick the quantities so it works out to a nice base 10 set of ratios.
Base 2 naturally arises when dealing with information theory that underpins a lot of digital computing.Say what you will about the imperial system, but you can pry binary, octal, and hex from my cold dead hands.
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.
Why not just keep it simple and use the 5.4 microseconds * speed of light approximation? People just love making things overly complicated.
Especially when you just set c = 1
Just remember God giving you a single grain of sand. “One thou sand”.
Not a easy to remember as 5 tomatoes.
My 2 main annoyances with the metric system:
First: The SI unit for mass is the kilogram. That’s fucking stupid. A kilogram is 1000 grams, the base unit for something can’t be “1000 of this other thing”. Because the kilogram is the SI unit for mass, that means that a gram is, by definition, 1/1000th of a kilogram. The stupidity, it burns!
The second one isn’t really an issue with the metric system, it’s more when people are almost using the metric system then fuck it up, like the “Watt Hour” for measuring energy use. You know, there’s already a way of measuring energy use: the “Watt Second”, also known as “The Joule”
it’s more when people are almost using the metric system then fuck it up, like the “Watt Hour” for measuring energy use.
Energy is just so important to physics and engineering that it will be measured in whatever unit is most convenient to convert in that particular context: joules as the SI unit, watt hours for electricity usage, calories for certain types of heat or food energy calculations, electron volts in particle physics, equivalent tonnes of TNT for explosion energy, things like that.
I don’t believe that “watt hours” are more convenient than joules, especially when they’re not just watt hours but kilowatt hours or megawatt hours. At that point just use megajoules or gigajoules.
I can understand things like eV where the scale is so different that you’d have to constantly use tiny and unusual prefixes. But, for most other things like calories, it’s just tradition rather than a well thought out reason.
I don’t believe that “watt hours” are more convenient than joules
Clearly you’ve never had to do the calculations where these things come up, where hours are a much more common unit of measure for time than seconds, so that multiplying and dividing by time is easier when working with hours.
Fair, but I lived in Denver for 26 years. I will never forget the number of feet in a mile. 😂
Heeey, I’m currently living in Northglenn. Same, it’s forever etched in my memory.
Did someone say feet?
Me watching a BBC TV show: “The suspect’s home is five miles away.”
shocked pikachu
there’s a very important video on the measurement rules in the UK, if you haven’t seen it: https://www.instagram.com/reel/DNh9z3IzG8t/
What about a nautical mile?
All units of measure are abstract.
I like metric because it’s structured around an abstract amount. Even something like Celsius is pretty abstract, because the freezing and boiling point of water changes depending on the atmospheric pressure. The measure of a second? Why is a second, 1 second long? Why is it 1/60th of 1/60th of 1/24th of a day? There’s other stuff based on seconds too, like Hertz, which is literally “cycles per second”
I like to think about how abstract these things are, because if we were to ever try to communicate with a truly alien race, we couldn’t really use numbers, because their base numbering system would be different than ours, their symbols for numbers would be different, their entire understanding of math and how to calculate stuff could be wildly different, possibly because they understand things we do not. We couldn’t even say to them to communicate on a specific frequency of EM, because that frequency is based on Hertz, which is based on seconds, which is based on ??? IDFK (neither would they). We base everything we know on the world around us, and that’s entirely unique to earth. We make so many assumptions about how things are because we’ve only ever experienced life on this planet.
The only thing that kind of makes sense is how many days of the year there are, because it’s based on solid science about our solar system. It’s still unique to earth, but at least it makes sense on a larger scale. Everything else? Who the hell knows. Why is a meter as long as it is? Who defined this? Why? What abstract Earth-based thing was this based on that other societies of individuals would have no point of reference to relate to?
It’s wild we’ve made it this far, to be honest.
Anyways, I kind of got sidetracked… I guess all I’m really trying to say is that metric makes more sense than whatever the USA is doing. Even if it’s just as abstract in its conception.
…which is based on seconds, which is based on ??? IDFK (neither would they)
“The second, symbol s, is the SI unit of time. It is defined by taking the fixed numerical value of the caesium frequency, ΔνCs, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s−1.” https://www.bipm.org/en/si-base-units/second
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.
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.
Except an alien species wouldn’t know what cesium is… We would need to represent it to them as it’s molecular makeup, which is the only absolute representation of it, and would they know what a proton/neutron/electron are? Would they have a deeper understanding of the physics, and thereby have a different understanding of what we consider to be quantum particles?
We only generalize protons, elections and neutrons because we don’t really know what those things are made up of. Maybe they do, so when we show them our representation of it, would it be too rudimentary for them to comprehend what we mean?
There’s still a lot we don’t know. And these are the kinds of questions that tickle my brain.
their base numbering system would be different than ours, their symbols for numbers would be different, their entire understanding of math and how to calculate stuff could be wildly different
The neat thing about math is it’s built upon universal truths that exist independently of how you describe them. 1+1=2 regardless of how you represent those numbers. Even among humans we have plenty of different ways of describing numbers.
Also, the best thing about science is that physics works the way it does regardless of how you describe it. An atom of hydrogen will always have the same spectral peaks, regardless of what units you describe those peaks in.
It’s these kinds of things we consider when trying to communicate with aliens. Take a look at:
https://en.wikipedia.org/wiki/Pioneer_plaque
https://en.wikipedia.org/wiki/Voyager_Golden_Record
https://en.wikipedia.org/wiki/Arecibo_message
These messages will probably never be received, even if there is intelligent life out there. But if something intelligent does find these messages, they will probably determine they are artificial, and hopefully manage to decode some of it.
See, this is all fascinating for me. I love this stuff.
It’s also a good exercise in recognizing the assumptions we make every day. I’m trying to get to a point where I can articulate my thoughts and I don’t have to struggle through the curse of knowledge.
I’d assume that if we are ever communicating with aliens and trying to figure out each other’s way of expressing numbers and doing math, dimensionless constants like pi, Euler’s number (e), the fine structure constant, etc. will be important first steps. As you say, our units of measure are purely human inventions. But the ratio of a circle’s circumference to its diameter is the same no matter what units you use to make the measurement.
I like you.
These are all good points. Thank you.
