-40F 🤝 -40C
Even a broken clock is right twice day.
cries in digital clock
Even a stuck digital clock is right once a day.
When it’s stuck, yes. When it’s broken and the display is of welll…
It might not be right, but it’s never wrong.
Is that a thing that happens?
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Fun fact!
isn’t it strange how they match up at such an exact number
Pedantry:
K and °R agree on 0
K and °C agree on the unit difference
°F and °R agree on the unit difference
°R and °Ra are the exact same thing (??)Also Rankine, being an absolute scale, theoretically shouldn’t be in ° anything, and it’s only some weird historical quirk that is the reason it usually is called degrees.
I am not sure I follow that. The scale is always relative right? It’s just the zero that’s absolute. But that’s also the case with measuring angles where we do use the degree symbol.
It’s just the zero that’s absolute
Right, that’s what makes Rankine and Kelvin absolute scales, while Fahrenheit and Celsius are relative.
Celsius and Fahrenheit agree on -40, but since they’re scales that scale at different rates there’s bound to be some value where they intersect rather than some meaningful number like Kelvin and Rankine being zeroed to Absolute Zero
Same with 574.59°F = 574.59K
Two lines which are not perpendicular will meet at one point?
Good thing °R and °RA aren’t pointing guns at each other
Neither are °F and °R nor °K and °C
This is almost artfully done
This screenshot is a little bit hard to see, but from what I can tell:
°RA is pointing at °R and °C
°C is pointing at K and °F
K is pointing at °R and at °F
°R is pointing at °F (and the other gun isn’t aimed at anyone in particular)
°F is pointing at K and at °CEmphasis disproves your claims, sadly. Perhaps there was another way to label them to make it fit, but that’s not what was done here.
°R and °Ra are the exact same thing (??)
I think °R is supposed to be Réaumur
Imagine if some distance measuring system decided their zero was at like 10 feet.
Let me just shorten this down 8 feet
welds on an extra 2 feet
If using log scale, 0 is at -∞
no 0 would be at 1
Never heard about °R and °RA before this meme
It’s the Rankine. Some Scottish dude wanted to use Kelvin without using Kelvin. It’s basically the Fahrenheit scale but with 0˚R set at absolute zero.
0˚R = 0Kand1˚R = 0K + 1˚FFrom what I can gather, R and Ra are the same thing?
They are. The post could swap one of them out for Re or Rø instead and it would work, though
https://en.wikipedia.org/wiki/Réaumur_scale
so, they meant °r probably
https://byjus.com/physics/unit-of-temperature/
I had to look out up too!
Now look into °De. It’s upside down!
https://en.wikipedia.org/wiki/Delisle_scale
Why would you do this to me?
Comparing arbitrary degrees to absolutes. Notice K is the only one without the degree symbol…
Would Rankine not be an absolute?
It is, but like everything imperial, it is cursed. So it still has a degree sign by convention despite being an absolute scale
yes it used the same zero as Kelvin
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Rankine and Kelvin have zero at the same point, which is absolute zero, and should not be used with the degree symbol
This concludes my TED talk
According to Wikipedia Rankine is properly used with the degree symbol, but sometimes is not by analogy with Kelvin.
Celsius tried to fit too much into 100 notches to please big math.
F is more nuanced with more notches, but the ends aren’t logical. It coukd be shifted perhaps, but how?
If freezing was moved to 0, then water boiling would be 180
Perhaps C could have had a 200 degree range, then it would be closer to F and not so hard to convert.
But also: Scientists are important and we shouldn’t make it too easy, it demeans their work. Maybe make the C scale show water boiling at 183.4521 degrees so scientific calculations are more impressive-looking and respectable.
and not so hard to convert
“Please change the entire world’s system to make it easier for the one country that uses a different one”
It’s more like “please convert two nonsense systems to be more workable via math”. C is pretty unfriendly to universal math and depends on earth gravity, I’m not going to defend F on any standpoint.
The reality is we should all be using K.
It wouldn’t even change the difficulty, really. You’d just wind up multiplying or dividing by 9/10 instead of 9/5.
America moving zero to Celcius’ zero would be better, it would remove one whole step from the calculation
Then if they made their degrees about 9 fifths the size (they could get higher resolution than they’d lose by doing what we do and quoting temperature to one decimal place where needed) it would be dead simple to convert (just change the symbol from °F to °C!)
It’s not limited to 100 steps. The decimal system gives you infinite granularity.
When having a beer, I’ve always found it funny that one of the few imperial measurements metric nations kept around, the pint, America went and invented their own. Uncharacteristically a smaller version too.
Every time I hear, “pint” I think of Pippin saying, “they come in pints?!”
So, here in good ol Austria, when we go to an US/UK/Irish pub and order a pint we always get 0,5L and for a 1/2 pint we get 0,33L.
Are half pints half the price of pints? I smell arbitrage.
The US has their own version of all the imperial units. Also who uses pints except the Brits?
India, I think. But that’s the Brits’ fault too obviously.
We don’t use pint here. We have some traditional measures that have different absolute values depending on location. We are almost totally metric here.
I could’ve sworn I once had a pint but it was in a hotel lobby in Bangalore so not quite representative. I stand corrected, thanks.
Metric nations havent kept the pint
I just started looking up the different ways to order beers. Wow. Even if it’s based on the metric system, each country really did go and reinvent the wheel.
They haven’t, but some still sell beer by pints. I can go to a store right now (well not right now, it’s past 10 PM) and buy a pint sized beer and a 0.5l beer from the same company.
America didn’t really invent their own volume of measurements, they just didn’t keep up.
They used what the British used, then separated from Britain, and didn’t update the units when Britain did.
Yes, I think the US pint is 16 Oz (2 cups), whereas the UK pint is 20 Oz (4 gills).
I went down a huge rabbit hole cause of this. I personally like °F over °C but agree it’s arbitrary. So I tried to make a scale that started at the coldest air temp on earth (some day in Antarctica) and went to the hottest day on earth (some day in death valley) and put the coldest day at 0°A and the hottest at 100°A.
Sadly this made a scale that was less precise than I’d like. I like that I can feel the difference between 73°F and 74°F and don’t want to have to use decimals.
So maybe the end points could be only places where people actually live. Well it looks like some people live in Russia around -70°C and some people live in northern Africa around 50°C so if you just take °C and add 60 you can get a -10 to 110 scale where most temps would fall between 0 and 100. Still has the unit difference of °C (which I don’t like) but I like that most temps are between 0 and 100. I also don’t really like negative temperature since it seems wonky.
To “fix” the unit scale you could just multiply everything by 2 so the difference between each full degree is half as much. So temps would be between -20 and 220. °A = 2(°C + 60) °A = 2(°C) + 120
And it turns out I (basically) created the Fahrenheit scale but moved. °F= 1.8(°C) + 32
TL;DR: I’m stupid and this was fun but also a waste of time lol
But R and K agree on zero
Rankine isn’t pointing a gun at Kelvin because of this, but Kelvin is pointing one at Rankine because Rankine is an abomination that should not be
This is more like if you measured altitude by counting from sea level vs the center of the earth vs the top of Mount Everest or something
Meanwhile, Pi and the Fine Structure Constant watching the show, passing each other the popcorn.
The best part about the fine structure constant is that it is not related to any other thing. It just is.
It’s a magic number that just emerges in physics.
And it is not constant.
Even though it is.
Dimensionless numbers, not dependent on any mere mortal, subjective arbitrary unit of measurement like length (meters or yards or cubits - same difference) or time.
Whether you are on Earth or a planet in Andromeda or a billion light-years away, if you study subatomic structure you WILL bump into the fraction 1/137. Just like you will in geometry with 3.1416.
At least Kelvin and Rankine agree on the zero, soooo…
FRRACK
0 lbs/lg = Absense of weight.
0 inches/centimeters = Absence of size.
0 Kelvin = Absence of heat.
If something is 0lbs, 0 inches and 0 Kelvin: does it even exist? 🤔
