-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?
If, say, the RTC dies or similar, then yeah
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Fun fact!
isn’t it strange how they match up at such an exact number
Funny how the imperial system matches at oddly exact numbers with the metric system… Strange indeed.
it’s likely because their current definitions are both fixed on the melting and boiling points of water
Sorry i was /s, the entire imperial system is now defined through the metric system standards. For example, 1in is defined as EXACTLY 2.54cm. Fahrenheit is defined as EXACTLY 5/9(x +459.67) [K] or 5/9(x-32) [C].
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 (??)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?
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.
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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
I mean, the temperature can be -1. But nothing measures negative.
Imagine if it did though.
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.
Gross
I absolutely agree! Both should get degrees, because that would make temperatures finally make sense!
(I am aware that the degree symbol has something or other to do about not being absolute yada yada yada 😅)
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
Celsius is tied to points of ice melting and water vaporising. Since water is very important for the life on our planet, it makes even more sense than arbitrary chosen meters or seconds.
At sea level. Welcome to La Paz, where the triple point is made up and the freezing point doesn’t matter!
And similarly, Fahrenheit seems to be tied to the internal temperature of the human body, with 100 degrees being the maximum that the average person can handle before their organs start to be damaged.
Yes, Fahrenheit is about humans, and Celsius is about the element that makes life possible. The latter is more generic.
Maximum is 100 °F and minimum is 95 °F. Those seem pretty arbitrary to me
