I believe most people know that the minimum temperature is absolute zero, which we all learned in school. Absolute zero is about minus 273 degrees Celsius.
But what many people don't know is that there is an upper limit for high temperature, which is the Planck temperature. However, the Planck temperature is too high, reaching 1.41 x 10 ^ 32 K, which is hard to imagine. So in daily life, many people will default to the maximum temperature is no upper limit.
The Planck temperature is the temperature of a Planck time of the big bang, which is the upper limit of the temperature.
The existence of Planck time means that time is not continuous and there is a minimum unit. Any unit smaller than Planck time is meaningless.
At the same time, the theory of blackbody radiation holds that any object will radiate electromagnetic wave outward. The length of electromagnetic wave is related to temperature. The higher the temperature is, the shorter the wavelength is. The length of space is not infinitely short. There is a lower limit: Planck length. Any unit smaller than Planck length is meaningless. The temperature calculated according to Planck length is Planck temperature.
Absolute zero is only the lowest value of a theoretical mountain, which is the temperature when the micro particles are completely stationary. Because of the uncertainty of the quantum world, the micro particles can not be completely static.
