You must log in or register to comment.
Fun fact time, -40F is -40C.
And 575F is 575K
Fahrenheit is a strange scale.
Fahrenheit makes sense for humans. Most of your day to day climates are in the 0 to 100 scale, and every 10 degrees is a noticeable level change.
- 100 super hot day, approaching unsafe without counter measures
- 90 really hot day, slightly annoying and should take precautions
- 80, hot day, more annoying than anything
- 70, beautiful day, enjoy it
- 60 not to bad, if it’s windy you could be slightly on the cold side
- 50 long sleeves or maybe a hoodie
- 40 definitely a jacket, and hat
- 30 full on coat, scarfe, and hat
- 20 multiple layers of out for a while, maybe double pants
- 10 annoyingly cold, need to start thinking about the safety precautions
- 0 and below, temperature now measured in hold long you can be outside before danger
Celsius makes sense for science stuff because it’s derived from science stuff, so things like calories and energy work with it. But it doesn’t really apply to everyday life as well. So it actually makes sense to use both units for the things the are good at.
It depends on what you were raised with. For me I have all these relevant points in my head for C. 25 is nice, under 20 you slowly need to dress longer stuff. Over 30 is hot, over 40 sucks hard, over 50 can become deadly soon. Body temp is around 37.
I don’t science anymore, but living in a F country, I keep in mind for conversions:
0C is freezing point of water ~32F 20-22C is room temp ~68-72F 30C+ is Unhappy temperatures/hot.
Really only things I need to remember, and gradient based off of. It can get up to 45C where I live, but that would never be important to me. I hate the heat, if it’s 30C+, the degree to which it is hot matters little, I’m going to just want to stay out of the sun or go inside.
A F country? You can just say the US, I doubt it’d be Cayman Islands or Liberia lol.
Here 70F is perfect weather. For reference we set our a/c at 68 at night and it’s literally freezing cold if you walk though in your underwear. Any hotter and you’ll need to start dressing in lighter stuff. Any colder and you might wanna wear a flannel. Hell my house stays at 72 all day and it’s perfect.
Being from outside of the US I’m used to Celsius for everything, so I can make the same list, the numbers are just not whole 10s and I would probably round to nearest 5.
They probably don’t understand numbers not ending in 0.
But it doesn’t really apply to everyday life as well. So it actually makes sense to use both units for the things the are good at.
It’s funny to assume that all people using Celsius are unable to ascertain how they will feel outside based on the temperature value.
I mean, I understand that round numbers are cute, but we are able to handle numbers ending in 5 as well as numbers ending in 0.
Somebody’s from the north. Even as warm blooded as I am 80 is a nice day and 90 is just annoyingly hot.
why are you being so heavily downvoted? you’re not even saying anything controversial.
Because it assumes that using Celsius makes the same estimations impossible. It’s basically telling most of the world that we outside the US are stupid.
Curious, how easy is it for you to understand what X°F is?
I don’t have the need to know it. But the comfort of rubes is not a reason to persist in a backward unit.
But again, the US is such a backward and sick country in so many other ways, that is even better they keep acting backwards. It’s a reminder to the rest of the world to keep our distance.
That’s not particularly nice. I said nothing ill against you, and I feel it’d be implied by my question that I am one of the “rubes” you’re speaking of. Such an unwarranted jab.
And wishing for the suffering of 300,000,000 people is cruel.
Google “XF to C”. That easy.
Every time. I never use freedom units so if I read some reference points I’ll forget them by the time I read the next freedom unit. I only know my height and what an inch is because of phones and screens.
Feet are not intuitive at all either, my gf has 5 on the US scale and I have 13.5, one is 22cm and the other is 31cm. That’s a huge margin on what the us feet unit actually is. Turns out that feet are 30.48cm, so basically my feet is actually a us feet, yay. I’ll forget this tomorrow. cm is arbitrary too, yeah, but at least it has the ease of conversion.
And at what temperatures are C and K equal?
Never. They use the same spacing between degrees. The Kelvin scale was derived from the Celsius scale, just placing the 0° at absolute zero rather than at the freezing point of water.
Fahrenheit: how hot humans feel
Celsius: how hot water feels
Kelvin & Rankine: how hot atoms feel
I don’t think how hot humans feel works at all, it’s just arbitrary
Can humans survive 100 degree heat? Yes so it doesn’t represent 100%
150 for 3rd degree burns (almost instant), does Fahrenheit go off base 150? Also no
What about cold? Well -40 requires a lot of layers, so then +40 should be pretty hot for humans right? Nope, because it’s not related to humans at all
100°F was supposed to be average human body temp. Guy who made the scale fucked up his math and we ended up actually at 98.6°F
Nah, that’s a myth. It’s actually a little more complicated than that, and the actual measurements changed over time.
“the original paper suggests the lower defining point, 0 °F, was established as the freezing temperature of a solution of brine made from a mixture of water, ice, and ammonium chloride (a salt).[2][3] The other limit established was his best estimate of the average human body temperature, originally set at 90 °F, then 96 °F (about 2.6 °F less than the modern value due to a later redefinition of the scale).”
That’s from your link. Seems like the guy you responded to was correct or the wiki isn’t.
If farenheit represents how humans feel then 50 is the most comfortable temperature right?
0 should be the most comfortable, with less being cold and more being hot.
This is a great scale. Let’s solve all the arguments about temperature and instead just create a “pleasantness scale”. Could probably even market this and sell a “personalised pleasantness scale” and you pass it out to your friends when you meet them.
In human terms, only 65 and above is passable.
I don’t think how hot humans feel works at all, it’s just arbitrary
Fahrenheit was originally calculated to be 64 even divisions between water freezing temp and human body temp, then 32 more units below freezing.
Then ambient human body temp was recalculated from 96F to 98.6F.
So it’s not exactly arbitrary. It’s based on powers of 2, based upon an inaccurate measurement.
I mean, the temperature 0 was assigned because it was the lowest temperature that winter in Fahrenheit’s town, and the “powers of two” was only chosen because it was simple to mark degree lines on his instrument. Feels quite arbitrary to me…
And yet, as a person, Fahrenheit seems far more intuitive and Celsius arbitrary.
Neither will kill you (usually) but both suck.
Can humans survive 100 degree heat? Yes so it doesn’t represent 100%
I have no idea what this means.
150 for 3rd degree burns (almost instant), does Fahrenheit go off base 150? Also no
What about cold? Well -40 requires a lot of layers, so then +40 should be pretty hot for humans right? Nope, because it’s not related to humans at all
Why do these matter? What percentage of humans live where it’s regularly -40 degrees? Why does the scale need to be perfect in your opinion? And how is Celsius better?
I have no idea what this means.
Humans can survive 100 F so it’s not a scale of 0-100, which you would expect for a system based on humans
Why does the scale need to be perfect in your opinion?
The person I responded to said it was based off humans, I was arguing that it wasn’t because no patterns exist in relation to humans
And how is Celsius better?
Well the person claimed it’s based on the temperature of water at sea level with 0 being freezing and 100 being boiling. This would be the 0-100% for water
Technically, water can still go higher than 100°C, same as humans can go higher than 100°F. Water turns into steam. If the temperature continues to rise, the steam would theoretically enter a plasma state. Then, you could say the water has “died” as the atoms and molecules lose their electrons.
Humans can survive 100 F so it’s not a scale of 0-100, which you would expect for a system based on humans
No one said it’s a scale limited from 0 to 100 on the basis of survivability. That’s something you just made up on the spot to push some weird narrative.
The person I responded to said it was based off humans, I was arguing that it wasn’t because no patterns exist in relation to humans
I again have no idea what you’re saying. The patterns of 0 being low and 100 being high isn’t a pattern related to humans? That’s obviously not true. We use 0 as the bottom and 100 for the top on a lot of other things.
Well the person claimed it’s based on the temperature of water at sea level with 0 being freezing and 100 being boiling. This would be the 0-100% for water
Why are you limiting 0 and 100 as cut offs?
No one said it represents “100%”, whatever that is even supposed to mean. 100F is really hot outside. 0 F is really cold. Doesn’t have to make 100% sense. Celsius doesn’t make perfect sense either. There is no perfect magical scale that works completely.
Fahrenheit only works like that if ur used to extreme cold tempature. Anything under 10c (50f) is cold af to me and 38c (100f) is hot sure but nowhere near as cold as -17c (0f) is
It’s pointing out multiple ways that it doesn’t represent people
Based on human perception, based on water chemistry, based on physics.
You’ll be shocked to learn that the distance in Kelvin is also adjusted to water “chemistry”, albeit changing the aggregate state seems more physics to me, since no molceules are reacting with each other.
Thankfully that has been redefined using the Boltzmann constant, so now anyone in the universe can agree on °C and K without needing to measure any Vienna standard ocean water.
I was going to make a joke about how Austria is landlocked, how did we come up with the idea of making an ocean water standard.
Apparently the IAEA which is headquartered here set that standard, for anyone else curious.
You can’t change the aggregate state of a single molecule, or how do you mean that? Excluding plasma.
you can of a lot of molecules though. and tgat is classically “physics” rather than “chemistry”. Classical chemistry is reactiona between atoms or molecules to form new ones.
If you get deeper into it, the lines between chemistry and physics blur anyways.
Ah yes, now I understand your previous comment. My reading error, thanks.
Zero Fahrenheit is the freezing point of brine (of a certain concentration). That’s water chemistry.
Originally, 90F was based on the average human body temperature, but that later changed to 96F, which just goes to show how arbitrary that scale is.
It’s all arbitrary. Someone just decided to base a scale off of something and that something isn’t fixed from the start. The meter used to be based off the measurement of the earth, but now it’s based off of light.
It’s just some random semi-useful starting point that we all agree on so we’re using the same language.
The meter did not change, science has merely defined it more precisely and reliably over time. It is a measure of length, still one 40 millionth of the circumference of the earth through the poles. Other definitions like the speed of light definition will give you the same result. These newer definitions have reduced uncertainty and added ways to reproduce its length by natural means. But it’s not like the ‘original’ meter was shorter or longer than today’s meter, at least not by any noticeable margin.
Shifting the top end of a temperature scale by over five percent of the scale is a bit more arbitrary than that.
So, Kelvin in Physics, Celsius in daily usage and Fahrenheit…?
Since when is 0°C “fairly cold” it’s literally freezing.
0°C is completely fine with jeans and a thick jacket, especially when it’s sunny and there isn’t much wind. It’s cold, but there’s probably not much ice or snow, if anything, probably mostly slush.
Compared to say -20 C where you should have a good ski jacket and ski pants, warm shoes and socks, generally multiple layers everywhere, winter gloves and so on.
It can be -20 C and you can be still fine with jeans and a jacket if it isn’t windy.
What I’m saying is temperature alone doesn’t tell you the whole story.
Yeah, part of why they also have “comfort” or “feels like” in forecasts besides the actual termperature.
But so is 100°F completely fine with a shirt and shorts and some shade.
So basically: |0°F| > |100°F|, where | is the mathematical absolute operator.
0°F is really cold, while 100°F is merely somewhat hot.
Humidity. I’m guessing you don’t live in a humid place because freezing temps are horrifically cold here. You will need a winter coat and multiple layers of your going to be outside for a while. I layer long Johns under my pants and wear my parka and a light jacket as well as 2 layers of socks. Everytime a northerner comes here they are shocked at the cold/heat. That’s because the air here is full of water to the point that you will actually get wet just from the humidity, not even sweating.
It is also literally melting.
I’ve been in -37C snow shoveling. Since then 0C doesn’t even register as cold to me
Yep, and I’ve been in 110C in sauna. It’s pretty fucking hot but not death
I think more that if it’s 100c outside the planet is basically dead.
I’m pretty sure you mean 110°F, don’t you?
110°C = 230°F
110°F = 43°CNo. Finnish sauna is usually around 80°C to 90°C, but sometimes crazy people do over 100°C. The starting temp in sauna competitions was 110°C
I just read that wikipedia article, and man, those saunas are crazy. I guess they really did mean °C.
You go to 43C sauna?? Lmao
Lol that’s F
Have you ever been to a sauna…?
110°F is a very cold sauna.
If a sauna is 110F I’m leaving because that thing is broken
Yeah I read spa for some reason and was thinking water temperature.
The northern half of the US laughs
Many places in the US, particularly in the East and Midwest, experience average temperatures at or below freezing (32°F) in the winter, so while it’s definitely cold, it’s often not considered really cold. It’s not until you move further towards 0 and the negatives that most people in that area feel really cold (like weather advisory levels). Of course the further north you go, the more normal those temps are. Likewise, it’s definitely not unheard of for temps to hit 100°F (37°C) in the Southwest, but it would be considered pretty hot for much of the country, and even Texas suffers at sustained temps like that.
Freezing temps here are definitely considered very cold. Cold enough that you need multiple layers and you should be wrapping your pipes to prevent freezing. It’s very humid here. Our freezing is insanely cold. Like chills you to your bones cold. Our hot here is insanely hot as well.
I would put it at a 3/10
I’d like to propose a discussion between a person from Arizona and a person from Alaska to define what is “Really hot outside”
Im from Texas, and 100F is “stay inside in the AC” weather. I bet an Arizonan would say the same.
Being from a particularly hot or cold location doesn’t make you immune to heat or cold, it makes you a connoisseur of heat and cold. You get better at recognizing gradations of extreme temperature (knowing which are uncomfortable and which can literally kill you if you’re not careful), you learn how to plan ahead and dress for the weather, and you develop emotional coping systems for extremes.
But if it’s either 100°F or 0°F, no matter where you’re from, that’s a temperature to be wary of.
Or cold
Celcius is the logical choice. The others are just crazy.
Kelvin and Celsius are the same, just offset onto absolute zero or the water freezing point
Yeah, often it is just way more convenient to use the Kelvin scale without any negative temperatures for some calculations and formulas then Celsius
Than* Celsius.
Because aligning to the temperature at which water boils is the objectively correct choice?
“Hey, how hot is it going to be today?”
“Well water is about 1/3rd the way to boiling, so about 30 degrees”
True, we should be using a temperature scale that was defined on how cold it was in Gdańsk, Poland in the winter of 1708, something the average man is more familiar with than water temperature, right?
The fact that 99.5% of the global population uses it makes it the objectively correct choice.
The remaining .5% can keep bashing their heads against a wall if they like though
Most people like pop music. Does that make it the best?
Pretty sure what you did here was a logical fallacy. Idk which one bc my smol brain cant comprehend them. In music yoh dont need a best. Eith units on the other hand it makes things a lot easier if they are universal.
Should be something like False Analogy.
We used water to decide a lot of measurements. 1ml of water is = 1 gram. A gram of water is also equal to 1 cm^3. It’s a beautiful system in that way. Water surrounds us and gives us life, it has chemically interesting properties that make this planet function. Why shouldn’t we just base everything off of this one substance?
Not using metric is so much more fun:
- water freezes at 32, boils at 212
- 16 cups in 1 gallon (both standard units of measurement)
- 1 (US) cup of water is 8 (US) oz
- 1 (US) cup of water is 14.4375in^3
Makes your maths so much more exciting!!
When it’s “freezing cold” or “ice cold” outside, what do you think is freezing? When something is “boiling hot”, what is boiling exactly?
We use water to describe temperature even without using Celsius, because it’s everywhere around us, and we are literally made of this stuff. It’s also one of the only materials that goes through three different states in our usual temperature range, so using those as a reference point to measure temperature makes perfect sense imo.
Maybe ecause everyone uses it? Just so you know nobody even knows how fahrenhiet was defined first, everyone in the scientific community uses kelvin which is celsius but shifted so absolute zero is zero on it and the us actually uses si they just convert it to imperial so conversion between them is easier. There is point to imperial units other than its hard to switch between systems.
You can get used to any scale
The temperature of water is very intuitive in nature. Dip ur hand in ice water. That’s almost 0C. Dip ur finger in boiling water (very quickly). That’s 100C. Dip ur finger in coffee whose temperature is fit for consumption: that’s around 75-80C. Ur hot water shower is likely between 37 and 41C…
Everything is tied quite well to water. Now compare that to F. What’s 0F? What’s 100F?
Forget the intuitiveness of celsius. It’s also much easier to calculate using celsius. When I say “My coffee was worth 80 calories”, I’m referring to a measure called “KCal”, which is the amount of energy required to raise the temperature of 1 litre, or 1 Kg of water by 1C. So if u ate something worth 100Kcal, you consumed enough energy to heat 1L/1Kg of water from 0C (ice) to 100C (steam). The average human requires around 2500 KCal everyday. Which is equivalent to 2.5 liters of water. Pretty cool, huh…
Just a quick sidenote: KCal is still not an “SI” unit. “Joules” are what we use here, but that’s another story.
the Celsius nerds are mad at you, I guess. I love it when you see someone make a good point and the downvotes just pile on.
never change, reddit.
edit: they’re here! lol. hey guys! have fun with your storming the castle to defeat the evil Fahrenheit! make sure to prepare your spells, you don’t wanna get caught out when the negative values come out. 💕
the Celsius nerds are mad at you
You mean most of the world? Defending a backwards options never looks like a rational choice.
Ooooooh I’m on defense? awesome! Do I have time to prepare units to line my front?
is this going to be a timed battle? what are the prizes for winning?
do I get a free Celsius thermometer if I win? that’d be swell!
That attitude requires an effort better employed to cultivate your mind somewhat. Maybe with time you’ll learn to use the inside of your head instead of only carrying your hair around.
Thanks! Same to you! I hope you figure out how to use your “hair carrier” effectively and be a little less serious about something as simple as the way someone records the temperature.
Wishing you the best of luck!
Being “a little less serious” about everything and demanding everyone to act the same is the mark of the willingly mentally inept.
Do you miss bullying the nerds?
Removed by mod
oh no need. I have my display set to Fahrenheit. I’m all good thanks!
We should really normalise the Japanese system - it makes as much sense as the European system and has the benefit of being “alphabetically” sortable.
I’m entirely for it.
Handwritten, I often use the military style 09 Oct 2023 just because the meaning is inarguable, but for files and such, it’s always YYYY-MM-DD.
I’d also like to see us adopt GMT, just calling noon and midnight whatever number they happen to be in our location. With remote work and jet travel, it makes sense.
And base-12 arithmetic, but that’s just a pipe dream.
Especially true if you include time as well:
Year > Month > Day > Hour > Minute
Vs
Day < Month < Year > Hour > Minute
Welcome to ISO 8601
Plus it’s self-describing! As long as you can read Kanji…
I’m not quite sure what that means - or that we should lead with that bit, but an advantage is an advantage… Even if it only benefits Japanese readers.
ISO-8601 or bust.
No other format really matters.
0°C getting cold outside
100°C getting hot in saunaNever any love for Rankine.
Thank you, came to be a scold myself if you weren’t here for it
100° outside is dead
True, you can be in 100’C indoors and be fine (sauna). Though I’ve heard some people think you’ll boil alive there lol
What did Kevin ever do to Fahrenheit or Celsius?
That’s lord Kevin to you, peasant
I like that
100c and 100K = dead but for different reasons
