From Wikipedia:
———————
Several accounts of how he originally defined his scale exist, but 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).[2]
———-
Any measurement of temperature is going to be relative to the atmospheric pressure among other variables… I’m not a scientist but Celsius is just as random… it may make more sense because freezing water and boiling water make sense to you with a refrigerator and stove… for most of human history this would not have made any sense……
There’s uses of metric that make a lot more sense, it is not my intention to defend imperial systems of measurement or whatever they are called, it is interesting to me though….
What are the measurements we can define where if we met a completely alien race from another solar system where we could immediately agree on the system… that’s probably the best one lol
Kelvin does make sense with the absolute zero thing, in my opinion at least… now I need to look up if there is a maximum temperature. And whether it matters lol… matter would probably fall apart at that temperature in which case it doesn’t matter anyways haha (edit: I just learned that Kelvin uses the same scale as Celsius apparently)
There is a theoretical max temperature, the Planck Temperature ≈ 1.416 x 10^42 K. It’s the temperature at which the wavelength of emitted light is the Planck length.
Basically, a system at planck temperature probably would consist of many tiny black holes, and adding energy to said system would create a larger black hole, thereby lowering the temperature.
That sounds like a misconception based on the misconception that the Planck Length is the smallest distance possible. Admittedly, I dropped out of physics 10 years ago so I might have no idea what I’m talking about.
Woooooah, man, but what if you put some weeeed in there man….
I thought a Planck was a small measure of distance? So that’s space,
I assume you have a idea what you know, space itself has energy?
Also, wouldn’t the black holes just combine, I assume these black holes are far apart in space?
I am not a physicist lol
I thought a black hole was a whole lot of stuff so a small black hole sounds off the charts ugh now I have to pretend to be a scientist and and go back to my mit free lectures damn it
Edit: In my imagination you’ve made me try to put a bunch of black holes kind of like dots on a black sheet of paper in the canvas of my imagination but if they were that close together they would just instantly combine or explode or something, the space between the dots would have to be some inconceivable distance for the “small” black holes to not combine and explode or gravitate the waves or whatever they do when they do that.
Or maybe it’s some perfect system where the small black holes are gravitating orbiting each other because we are talking about the maximum conceivable temperature so kind of like Led Zeppelin Pink Floyd or Bob Marley or something
The idea is that the tiny black holes are planck scale and they evaporate before they get anywhere near each other. Picture this:
It takes 10^20 Planck lengths to equal the diameter of a proton. It takes 10^20 protons to equal the diameter of the earth. And it takes 10^20 earths to equal the diameter of the observable universe.
Simplified: A black hole is the result of density – how much mass you cram into how little space. If something is heavy enough, even light passing near it gets pulled in and swallowed, so there’s some area where no light escapes: a black hole.
The difficulty is that you need a lot of gravity to bend the course of light. Gravity gets stronger the closer you get to the center, so at a certain distance, it will be strong enough no matter how little mass the object has.
But most objects are simply too large: Light will bounce off without ever getting that close to the center. You’d need to squeeze them together real hard to make them small enough, but there are other forces trying to keep them in shape that will resist you.
What you mean with “a whole lot of stuff” is the way more stable black holes work in space: A bunch of stuff so heavy that its own gravity is stronger than the forces trying to keep shape. If it’s strong enough, it can pull itself together so close that it gets smaller than that distance. Thus, there’s now an area around it where light can be trapped.
If you involve quantum physics, things get fucky, and supposedly there actually is some radiation still escaping, which is what the other post referred to, but I’m out of my depth there. There are also different types of black holes with their own complications, a bunch of details I skipped and a lot more I don’t even know.
Space is awesome and big and full of nothing and tons of tiny, really fascinating bits of not-nothing sprinkled in, and we could spend our entire lives studying it and never know just how much we don’t.
From Wikipedia: ——————— Several accounts of how he originally defined his scale exist, but 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).[2] ———-
Any measurement of temperature is going to be relative to the atmospheric pressure among other variables… I’m not a scientist but Celsius is just as random… it may make more sense because freezing water and boiling water make sense to you with a refrigerator and stove… for most of human history this would not have made any sense……
There’s uses of metric that make a lot more sense, it is not my intention to defend imperial systems of measurement or whatever they are called, it is interesting to me though….
What are the measurements we can define where if we met a completely alien race from another solar system where we could immediately agree on the system… that’s probably the best one lol
Kelvin does make sense with the absolute zero thing, in my opinion at least… now I need to look up if there is a maximum temperature. And whether it matters lol… matter would probably fall apart at that temperature in which case it doesn’t matter anyways haha (edit: I just learned that Kelvin uses the same scale as Celsius apparently)
Get it? It wouldn’t matter 😂
There is a theoretical max temperature, the Planck Temperature ≈ 1.416 x 10^42 K. It’s the temperature at which the wavelength of emitted light is the Planck length.
Basically, a system at planck temperature probably would consist of many tiny black holes, and adding energy to said system would create a larger black hole, thereby lowering the temperature.
That sounds like a misconception based on the misconception that the Planck Length is the smallest distance possible. Admittedly, I dropped out of physics 10 years ago so I might have no idea what I’m talking about.
Woooooah, man, but what if you put some weeeed in there man….
I thought a Planck was a small measure of distance? So that’s space,
I assume you have a idea what you know, space itself has energy?
Also, wouldn’t the black holes just combine, I assume these black holes are far apart in space?
I am not a physicist lol
I thought a black hole was a whole lot of stuff so a small black hole sounds off the charts ugh now I have to pretend to be a scientist and and go back to my mit free lectures damn it
Edit: In my imagination you’ve made me try to put a bunch of black holes kind of like dots on a black sheet of paper in the canvas of my imagination but if they were that close together they would just instantly combine or explode or something, the space between the dots would have to be some inconceivable distance for the “small” black holes to not combine and explode or gravitate the waves or whatever they do when they do that.
Or maybe it’s some perfect system where the small black holes are gravitating orbiting each other because we are talking about the maximum conceivable temperature so kind of like Led Zeppelin Pink Floyd or Bob Marley or something
Way cool, thank you :
The idea is that the tiny black holes are planck scale and they evaporate before they get anywhere near each other. Picture this:
It takes 10^20 Planck lengths to equal the diameter of a proton. It takes 10^20 protons to equal the diameter of the earth. And it takes 10^20 earths to equal the diameter of the observable universe.
That’s wild
Simplified: A black hole is the result of density – how much mass you cram into how little space. If something is heavy enough, even light passing near it gets pulled in and swallowed, so there’s some area where no light escapes: a black hole.
The difficulty is that you need a lot of gravity to bend the course of light. Gravity gets stronger the closer you get to the center, so at a certain distance, it will be strong enough no matter how little mass the object has.
But most objects are simply too large: Light will bounce off without ever getting that close to the center. You’d need to squeeze them together real hard to make them small enough, but there are other forces trying to keep them in shape that will resist you.
What you mean with “a whole lot of stuff” is the way more stable black holes work in space: A bunch of stuff so heavy that its own gravity is stronger than the forces trying to keep shape. If it’s strong enough, it can pull itself together so close that it gets smaller than that distance. Thus, there’s now an area around it where light can be trapped.
If you involve quantum physics, things get fucky, and supposedly there actually is some radiation still escaping, which is what the other post referred to, but I’m out of my depth there. There are also different types of black holes with their own complications, a bunch of details I skipped and a lot more I don’t even know.
Space is awesome and big and full of nothing and tons of tiny, really fascinating bits of not-nothing sprinkled in, and we could spend our entire lives studying it and never know just how much we don’t.
About the maximum temperature.
https://www.youtube.com/watch?v=oHyctwgE6m4