0 Members and 1 Guest are viewing this topic.
As it happens I don't think there is a good theoretical model for porridge. As such Goldilocks probably can't determine the temperature of her porridge on the modern (post 2019) kelvin scale. That temperature is simply "unknown" or "undetermined" at this time.
Depending on the temperature molecules move faster or slower?Do I understand?
Things aren't quite that bad. She may not find it easy to calculate, but it's very easy to measure with a thermometer calibrated in K.
How would you calibrate them against each other,
Different types of thermometers have their limits in range and linearities. How would you calibrate them against each other, if temperature is not well defined in standardized definition?
Quote from: alancalverd on 16/05/2022 00:18:15Things aren't quite that bad. She may not find it easy to calculate, but it's very easy to measure with a thermometer calibrated in K.Different types of thermometers have their limits in range and linearities. How would you calibrate them against each other, if temperature is not well defined in standardized definition?
After 16 pages you sound more confused about temperature than when you started.
Quote from: hamdani yusuf on 21/05/2022 11:29:58How would you calibrate them against each other, Practically speaking, like this.https://en.wikipedia.org/wiki/International_Temperature_Scale_of_1990Theoretically, like thishttps://en.wikipedia.org/wiki/2019_redefinition_of_the_SI_base_units#Kelvin
https://en.wikipedia.org/wiki/International_Temperature_Scale_of_1990#Defining_pointsSubstance and its state Defining point (range)K °C °R °FTriple point of hydrogen 13.8033 −259.3467 24.8459 −434.8241Triple point of neon 24.5561 −248.5939 44.2010 −415.4690Triple point of oxygen 54.3584 −218.7916 97.8451 −361.8249Triple point of argon 83.8058 −189.3442 150.8504 −308.8196Triple point of mercury 234.3156 −38.8344 421.7681 −37.9019Triple point of water[note 1] 273.16 0.01 491.69 32.02Melting point[note 2] of gallium 302.9146 29.7646 545.2463 85.5763Freezing point[note 2] of indium 429.7485 156.5985 773.5473 313.8773Freezing point[note 2] of tin 505.078 231.928 909.140 449.470Freezing point[note 2] of zinc 692.677 419.527 1,246.819 787.149Freezing point[note 2] of aluminium 933.473 660.323 1,680.251 1,220.581Freezing point[note 2] of silver 1,234.93 961.78 2,222.87 1,763.20Freezing point[note 2] of gold 1,337.33 1,064.18 2,407.19 1,947.52Freezing point[note 2] of copper 1,357.77 1,084.62 2,443.99 1,984.32
How can we make sure that those defining points conform to the definition of temperature?
Quote from: hamdani yusuf on 23/05/2022 03:48:08How can we make sure that those defining points conform to the definition of temperature?By doing science.You should try it some time.
I think you guys are getting very unproductive. My elegant description of temperature in the form of concentration of photons gives the concept. In statistical mechanics temperature is defined starting with Entropy (setting Boltzmann's constant to 1):Where T is temperature, E is the energy of the system and S is the entropy of the system. Temperature is the amount of energy required to change the entropy by one bit.
My elegant description of temperature
Temperature is the amount of energy required to change the entropy by one bit.
So, what's your answer to this question : what is temperature?
How do you calibrate temperature far from those defining points, such as 1 milli Kelvin, or 1 million Kelvin?
Quote from: Spring Theory on 23/05/2022 14:10:06I think you guys are getting very unproductive. My elegant description of temperature in the form of concentration of photons gives the concept. In statistical mechanics temperature is defined starting with Entropy (setting Boltzmann's constant to 1):Where T is temperature, E is the energy of the system and S is the entropy of the system. Temperature is the amount of energy required to change the entropy by one bit.What does the log2 mean? Is it a constant?How do you explain that melting ice doesn't change its temperature while absorbing heat energy?