Imperial units people, Do you sometimes get confused about time units as well?
Imperial units people, Do you sometimes get confused about time units as well?
Hi, I think in metric units, so almost everything is some form of a power of 10, like a kilogram is a 1000 grams, etc.
Sometimes I will think of an hour and half as 150 minutes before remembering that it is 90 minutes.
Does something similar happen to imperial units users? Because as far as I understand you don't have obvious patterns that would cause you to make these mistakes, right?
Your last sentence is correct. We don't have obvious patterns that would cause us any confusion (beyond the confusion we already have with this measurement system that makes no sense), so we simply memorize it.
I can't believe after all these decades, the USA still sticks with the imperial system. It's nonsense. But I grew up with the imperial system so that's what feels natural to me and I can "feel" what a mile feels like, I can "feel" what an inch feels like, but if you speak to me in metric, since we in the USA are not as exposed to it over here, I need to pull out my calculator to make the conversions to understand how a meter relates to a foot and a yard, yes I hate it, I would rather be able to think and feel in metric because it's more logical.
I'm with you on going metric. It's insane that we still use imperial units.
Congress passed a bill in 1975 that was supposed to transition us to metric, but it obviously didn't take.
I end up using metric units quite regularly for various reasons. My intuitive understanding of imperial units is still better, which irritates me.
imperial
Strictly speaking, it should be US customary units, not imperial. They're mostly pretty similar or identical, but there are some substantial differences.
https://en.wikipedia.org/wiki/Pint
The pint (/ˈpaɪnt/, listenⓘ; symbol pt, sometimes abbreviated as p) is a unit of volume or capacity in both the imperial and United States customary measurement systems. In both of those systems it is traditionally one eighth of a gallon. The British imperial pint is about 20% larger than the American pint because the two systems are defined differently.
https://en.wikipedia.org/wiki/Short_ton
The short ton (abbreviation tn) is a measurement unit equal to 2,000 pounds (907.18 kg). It is commonly used in the United States, where it is known simply as a ton, although the term is ambiguous, the single word "ton" being variously used for short, long, and metric tons.
https://en.wikipedia.org/wiki/Long_ton
The long ton (symbol: LT[citation needed]), also known as the imperial ton or displacement ton, is a measurement unit equal to 2,240 pounds (1,016.047 kg). It is the name for the unit called the "ton" in the avoirdupois system of weights or Imperial system of measurements. It was standardised in the 13th century. It is used in the United Kingdom and several other Commonwealth of Nations countries alongside the mass-based tonne defined in 1799, as well as in the United States for bulk commodities.
I propose the term "colonial units" as opposed to "imperial units".
There's some things imperial is just better at. Like temperature. 100 f is hot, but literally not even half as hot as 100 c. We as people can perceive imperial temperatures a lot better than metric.
On “we as people can perceive imperial temperatures a lot better than metric,” I’d agree to disagree here - Celsius is pretty straight-forward. Temperate is temperature, it’s just about what numbers you’re assigning to which temperatures.
0°C is when water freezes, and 100°C is when water boils. A 10°C day is cold, a 20°C day is mild, a 30°C day is hot, and a 40°C day is when you melt.
Whatever you grew up with is probably what is going to be easiest for you to comprehend, but Celsius is no more difficult or less perceptible, just a different value range.
Easier to remember that water freezes at zero and boils at 100 vs 32 and 212? (Im in US)
I'd argue that's just because you're more familiar with Fahrenheit (making the assumption you grew up with it).
Celsius is just as 'good' as anything, better if you consider that measuring temperature extends beyond human comfort ranges.
That is just absolute nonsense.
I am a Swede, I grew up with the celsius scale and it makes far, far more sense than Farenheit.
In Celsius, 0 is the freezing point of water, 100 is the boiling point of water, it makes sense.
Farenheit on the other hand starts at 0F, set as the freezing temperature of a custom made brine, and 90F was set as Farenheit's best estimate of the average body temperature, tuis was later revized as 96F.
The custom brine solution is a good start as long as it is made custom from scratch using distilled water and pure salt meassured exactly.
The 90F/96F is just dumb.
As for you being able to perceive F temps better than C temps, that is just because you are used to F over C.
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 celsius—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 imperial 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.
"we as people" - citation needed, lol.
But I don't disagree with you. Of course we'd have to switch from kelvin to ... Was it Rankine? ... To keep everything consistent and some physics constants would have to change as well.
The advantage of the metric system is the scaling. The base value does not matter. We could measure everything in feet for all I care, but no inches or miles then! Only kilofeet, centifeet, millifeet, etc! And we need a better distinction between force and weight than "pound" and "pound-force" - seriously, whoever came up with must have had negative creativity.
Please elaborate. I'm trying to understand why you think that people perceive Fahrenheit better than Celsius (metric).
A human has a core temperature between 36.1°C (97°F) and 37.2°C (99°F). If a person has a fever, it can be anything from 38°C (100.4°F) to 40°C (104°F). If we then don't have a thermometer to measure the temperature, our perception of "hot" will be the same when trying to determine if there's a fever or not.
Down at the beach water freezes at 0°C (32°F) and boils at 100°C (212°F). So it's dead simple for a 3 year old to understand since they just have to see the ice/ steam.
100°F not so much since there's nothing you have that you can relate to that is 100°F exactly.
https://youtube.com/shorts/Ipw8GjRUfiA?si=RjD075y0aS6xCQHA
At least these idiots agree with you. Water freezes at 30% hot!
"The 100 is hot" idea is not only completely arbitrary and human centric, but also a vague personal perception. And I'm trying to be nice because it's actually egocentric buffoonery that stems from the idea that everything revolves around us, whereas the metric scale puts people inside a measurable scientific interconnected system instead of our feelings being the center.
We as people can perceive imperial temperatures a lot better than metric.
This is entirely the result of what you're used to and has nothing to do with the system itself.
I am of the opinion that time should be expressed in base 36, much more subdivideable and allows you to express a given time as a two decimal point number between 0.00 and Z.ZZ
Also as you might have noticed, the latest time in the day is literally the Zs, the clock would be telling you to go the fuck to sleep already.
Much as I think this would be pretty confusing, I love that Z.ZZ thing :-)
I'm trying to work this out though - so what we call 24 hours would now be 36 different blocks of time, 1-12 and A to Z, right? (EDIT - wrong! 0-9, not 1-12, duh...)
So a '36th' of a day (or, actually, let's give it a name... A "Frin"? That'll do) would be equivalent to 24/36 of an hour = 2/3 of an hour = 40 minutes.
However would subdivisions of a Frin also be in base 36? If so, then the 36... Terps, let's say... in a Frin, would each last slightly longer than a minute... 40/36 = 10/9 of a minute = 600/9 = 66.666666... of what we call seconds.
But of course the next subdivision would also be in base 36. So each Terp would have 36... Bops... So a Bop would last as long as a 36th of 66.666666... seconds= 66.66666/36 = 1.85185185... seconds per Bop.
36 Bops make a Terp, 36 Terps make a Frin, 36 Frins make a Day.
What a strange world that'd be!
I'd still call it hours minutes and seconds since it's the same level subdivision,
It'd follow this progression, 0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z, part of the reason I like base 36 counting is because of just how many cool things just happen to come together with it, and the fact that the Alphanumeric set perfectly fits into it is one, another one I like is that "10" is a square that is also the product of two other squares.
But back to specifics, an "hour" is 40 present minutes, a "minute" is 66 and 2/3rds of a second, and a "second" is 1.85185... seconds, or 1 and 23/27ths of a second.
If I had it my way this would be paired with the Sym454 calendar to ultra-regularize everything
My favorite thing about my microwave is that if I punch “180” into the 4 character display, it will count down 80 seconds, then switch to 59, meaning it took 180 as 1 minute, 80 seconds, not 3 minutes
Wtf
I mean, I get why it does that...
I do too, but I’ve seen plenty of microwaves that parse a 3 digit entry as total time in seconds as well.
Similar to your example, I do sometimes have a "brain fart", thinking that X:50 means half. So, like if the microwave says 1:50, I might think that means 1.5 minutes left, but I generally catch myself pretty quickly, and it's never caused any real problems.
I did my undergrad in a science that lends itself to lots of metric measurements, so even though I'm born and raised in the US, I'm pretty comfortable with metric and tend to set my defaults to metric.
I have always found it interesting that typing 150 or 90 in the microwave both set it for 1 & ½ minutes.
I reckon its a bit clever that it allows for both people who think in seconds and people who think is minute+seconds.
I think in both imperial and metric, imperial forces more fractions into my thought, which may be useful for time divisions. Fractions can definitely be quicker for centering things along a length. But when I’m designing for 3d printing (a fertile that has always been metric based) I prefer mm/cm.
I'm in the USA, and I certainly don't use the imperial system exclusively --- my (domestic) education was in metric (undergrad and grad school), and now I work at an American company and use metric exclusively.
And yes, I get confused sometimes. Often I get time and currency confused, so if something is $1.59 I think it's a penny shy of $2, for instance.
It can be kind of confusing since seconds are part of SI, but hours and minutes are not. So you are kind of mixing frogs with oranges here. Even with metric units it's not always linear and intuitive. Take for example decibel scale which is logarithmic, which is something that throws people off. Same with Richter scale. Having earthquake at scale of 3 is not half the strength of 6. It's thousand times weaker than 6.
So in short, time keeping is done for convenience sake because 60 is divisible by a lot of numbers many times over. It can throw you off a bit if you are converting from metric to time format but there's a simple formula for that and with some training you can do the calculation in your head. It's a matter of practice.
Time units being base 12, 24, 60 are fairly convenient in that you can divide them evenly in many ways. I find this highly advantageous, turns out lots of folks did too and that's why we use it today.
I used to get confused doing arithmetic between AM/PM until I switched my life over to a 24 hour clock. Also why folks who do time math often like in hospitals or military use that system. It's comes down to convenience.
Living in the US, I know what mph, inches, feet, yards and pounds all mean. Anything else I'll end up looking up, and yes, I've lived here my whole life. I don't make any mistakes because I always end up checking how my cups are in a quart or whatever.
There's four cups in a quart! Volume measurements are base two, there's no need to look anything up.
Sometimes I will think of an hour and half as 150 minutes
You're still thinking of a pattern -- but there is a conflation between cardinal numbers and proportion/percentage. An hour and a half is 150% of one hour.
But no, that doesn't happen with imperial systems, because there just aren't really patterns to that level.
I tend to lean into fractions naturally, so time fits into that well. But like, I design quite a bit in FreeCAD for 3d printing and only work with metric for stuff like that. I hate that we have not switched to metric in the USA.
Time sucks ass. How many seconds in a day? 86400 or something. The whole thing feels like imperial units. I'd prefer if we'd just have percentages instead and work on fractions with special names for them.
Full disclosure, I'm a programmer.
Explains everything the SNL way.
I have a rather wide technical background and ended up pretty comfortable in both systems. I do have to do conversions in my head from km/h to mph because I've rarely used km/h (I've spent more of my time reading vehicle speed in knots).
Speaking of which, American aviation gives altitude in feet, runway lengths in feet, distance to travel in nautical miles, aircraft speed in knots, wind speeds in knots, visibility in statute miles, and temperature and dewpoint in Celsius. One of my favorite mixed unit expressions is the standard adiabatic lapse rate given as 2°C per 1000 feet.
When you're as concerned about freezing and icing conditions as pilots are, Celsius makes sense. I prefer Fahrenheit for "what the ambient air feels like." The scale from 0 to 100 degrees lines up pretty well with the range of temperatures found in most places people live, better than Celsius does anyway.
I learned chemistry and physics in metric. I can make technical drawings in either system, I have an intuitive grasp on what liters, meters and grams are as much as I have an intuitive grasp on what quarts, yards and ounces are.
I do carpentry and woodworking in inches though, mostly because the stock, tools and supplies available to me are designed in inches. On the peg at Lowe's or Home Depot you might find a measuring tape with both units, most will just be inches. I do own a purely metric tape measure. So I can cut you a board 50cm long if you really want me to. It's going to be a bigger pain in the ass to mill that stock to 20mm thick on my thickness planer, but trivial to mill to 3/4". My dado set is in fractional inches. I've never seen a metric router bit in person, and I've never seen a router collet that wasn't 1/4" or 1/2". No I really can't put a 6mm roundover on a board, you're getting a quarter inch. Metric drill bits aren't difficult to find but they're usually for metal, so I can pretty much drill an 8mm hole in a board (split-point metal bits tend to drill holes that are a little out of round in wood). Metric brad-point bits are a little bit more specialty items, and for forstner bits, 35mm fortsner bits are specifically easy to find for installing cup hinges, otherwise they're usually in inches.
If you were to put me in a wood shop full of metric tools and stock, it might take me awhile to get used to conventions. I'm used to thinking in terms of stock that's 3/4" or 1 1/2" thick, for example. I'm used to talking to a sawyer in standard; what's the metric equivalent of ordering "four-quarter" boards?
what's the metric equivalent of ordering "four-quarter" boards?
We have a lot of standard sizes that seem to be based on imperial - 12mm (1/2inch), 16mm (5/8inch), 19mm (3/4inch), 32mm (5/4inch) etc.
If you're actually interested in taking a look, here's a link to the dressed timber section of Australia's hardware capital - Bunnings.
I think you just made my point for me. Are those finished milled boards or rough sawn?
In America we refer to rough sawn and finished boards differently; a rough milled board 1 inch thick and 4 inches wide is 4:4x4 "four-quarter by four". This board will be milled to 3/4" by 3 1/2" and called a 1x4 or a "one-by-four." If I tell a sawyer "I'm looking for some six-quarter oak" he knows I'm looking for thicker than usual rough cut stock. "I'm looking for some two-by-sixes" implies I'm looking for pre-milled construction lumber. I can say a lot about the wood I want and the condition I want it in with not many words...to an American sawyer, anyway.
Oh, and then there's board feet! Pre-milled boards bought from retailers like Home Depot or Lowe's are sold price-per-each because retail, but you go to a lumber yard or sawmill you're going to pay by volume in units of "board feet." A board foot is a 12 inch wide, 12 inch long and 1 inch thick board, or 144 cubic inches. Which sounds like a bigger pain in the ass than it is.
no
only time is with some like a microwave where you type in multiple units for the same input
ie 90 is equivalent to 130Not really. I would be curious if other people immersed in SI only have similar issues to yours. Minutes and hours are based off of multiples of 12, and with feet and inches that's already one we deal with regularly.
The thing about time is that any likely division of an hour that you'd like, there's an easy and even division. /2 = 30, /3 = 20, /4 = 15, /5 = 12, /6 =10, /10 = 6 and vice versa.
It's pretty easy to get in the mind state of thinking a half hour is 30 minutes, or more specifically you can think 1.5 hours * 60 minutes / hour. The hours cancel out and you get 90 minutes.
I think ounces to lbs is the one that gets me, because we regularly talk about half and quarter pounds so 16 to 1 is just weird. Also fl oz to cups is 8 to 1 so...
Frankly I just avoid ounces if at all possible. It's a shitty unit. Run into it in cooking a lot though. Personally, when I record most of my recipes in my recipe app, I use metric. It makes math a lot easier.
A pint a pound, the world around
Sorry is that a US pint or a UK pint?