Jokes on you. I'm into 3D printing.
this post was submitted on 03 Oct 2026
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Centi is familiar to everyone from centi-meter, I have deci in deci-Bel for my optical signals at work, and I know hecto is used for hecto-Pascal which replaced the milli-bar. But I can't think of one for deka, can anyone give an example of a unit where deka is used often?
It's pretty much the least used SI prefix. Apparently used somewhat frequently in central Europe for "decagrams" (10s of grams)
Interesting, thanks. It's not familiar to me in my South-Western corner of central Europe. I'll have to ask my Czech friend if it's familiar to him.
Am from Hungary, can confirm, all recipes say decagram here.
It also makes sense in a way, you usually don't eat either kilograms or grams of anything really.
Like you go to the butcher and you won't ask for 213 grams of meat, or 5 kilos, you ask for 15 decagrams.
Thank you for the datapoint! Exactly like my Czech friend said as well.
It makes a lot of sense to me, that you would put a floor on the precision like that.
We often have the question at the counter, like "It's a few grams over, is that still okay, or should I take some off?".
Yeah, us too, just in good Hungarian fashion, that whole sentence is one word.
He got back to me really fast. He says yes!
Yes, you go to shop. To buy a ham for example. And here you fully just say: "10 deka of this"
He also gave me this song text (Michal Tučný - Prodavač with the chorus at 0:41):
Pět deka, deset deka, dvacet deka, třicet deka,
kilo chleba, kilo cukru, jeden rohlík, jedna veka,
všechno máme, co kdo chcete,
obchod kvete, jen si račte říct.
Čtyři kila, deset kilo, dvacet kilo, třicet kilo,
navážíme, zabalíme, klaníme se, to by bylo,
prosím pěkně, mohu nechat o jedenáct deka víc?
He also said ordering meat by the gram at the counter sounds super posh and overly precise to him, while it's just normal for me, very cool!
Decimeter is used often enough.
All of these can be used with any measure, and that's the point.
Yeah deci is familiar, but deka I haven't seen.
Of course they can, but its still noticeable that one is way rarer so I got curious where it might be in common use.
Dekagram of cocaine
Decagram is used in centeal europe for cooking and groceries, but otherwise probably unused.
yeah i suppose a 25.4 millimeter long dick would sound bigger than 1 inch huh
It is .0000451 exocelsius outside.
Celsius isn't actually metric, per say. Its based on the freezing point of water while farenheight is based on the freezing point of mercury.
Celcius is what most of the world used because 0 is where water freezes and is very relevant to the human condition, hence why its the most used.
It was adopted as part of the metric SI system but unlike all the units developed for metric which actually use the above scale, I do not believe there is any practical use for this with celcius.
Kelvin does use this however.
Ah yes "Micro" Soft. Bill there named the company after himself.
Put this on the Ronald Reagan did it pile. Jimmy Carter started us on the path to metric and then Reagan halted it.
I do wish we metric places (or at least Canada) were more flexible and familiar with the whole system. Sure we have milliliters and centimeters and kilograms, but people say things all the time like 2000km or 2 million kgs, or even things like 25000mAh. And I get it, people get into a frame of reference and want to stay there, but I wish people had the agility and practice to say 2 megameters, 2 gigagrams, and, well 25 amp hours, and still be understood. That last one's not hard, but packaging still seems to be stupid about it.
They took the Megagram away from us and called it a ton 😤
Funnily enough, the base unit of weight is actually kilogram. It doesn't change the fact that we can use other prefixes with gram, but still.
Big number good, ooga ooga.
I think I can see a tiddy or two in that number curve
I'm not 100% sure on the accuracy of this data, but if ever there was a place to paste this information, it is here.
Average Tiddy weight per boob by cup size, in Metric and Lemmy scales
A cup = 0.454kg = 1.1 Tins of Heinz Baked Beans in Tomato Sauce
B cup = 0.78kg =1.9 Tins of Heinz Baked Beans in Tomato Sauce
C cup = 1.023kg = 2.4 Tins of Heinz Baked Beans in Tomato Sauce
D cup = 1.388kg = 3.3 Tins of Heinz Baked Beans in Tomato Sauce
E cup = 1.950kg = 4.6 Tins of Heinz Baked Beans in Tomato Sauce
F cup = 2.35kg = 5.6 Tins of Heinz Baked Beans in Tomato Sauce
[Edit] I'm not sure if this is per boob, or per pair of boobs. More research required.
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That's not the metric system
What do you think the metric system is?
A set of standard units AND the prefix system
The prefixes can be and are used for anything including non metric units. Americans use the prefixes all the time.
The metric system is the tool of the devil! My car gets forty rods to the hogshead and that's the way I likes it.
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Trans girl I use to know called herself femto. I assumed it was because of her foot fetish but maybe it was related to the metric system.
Was she 10-¹⁵th on a hotness scale?
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Metric haters when they realize their electricity is measured in Volts (metric unit), not in "relatable" units like Sparks:
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This may be an unpopular opinion, but I really like the foot. It's great because you can divide it by 2, 3 and 4 and even 6 and it still works. I think it's a lot better to use than the metric system when working with wood.
That's because duodecimal is a great system and superior to decimalization.
You can eyeball the .333 mm and be fine
I think that's more because Canada and the U.S. developed wood sizes for building while using the foot as a measurement. I doubt they would have made 2 x 4s a thing if they were using metric.
While we're on the subject, can we please kill off "kilowatt hours". Fuckers, those are Joules, 3.6 Megajoules specifically.
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Hey hey, US customary units are metric:
The majority of U.S. customary units were redefined in terms of the meter and kilogram with the Mendenhall Order of 1893 and, in practice, for many years before.
They just use weird provincial conversion factors, that's all.
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