Centigrade joke

As we know, the unit of temperature scale in thermodynamics is K, which is Kelvin. The centigrade we are talking about now is the unit of centigrade scale, and the relationship between centigrade and Kelvin is T(K)=t(℃)+273. 15. Then -273. 15 degrees Celsius means that Kelvin is 0. This temperature is the lowest temperature in thermodynamics. It should be noted that this is only a theoretical value.

The derivation of this temperature will refer to the famous equation of state of ideal gas. In this equation, when the temperature reaches absolute zero, that is, minus 273.438+05℃, the volume of gas becomes zero. In this case, none of our existing theories can be studied, or all theories have become fallacies. Absolute zero is an impossible value, which can only be approached infinitely. Just kidding, even if it is achieved, we can't observe it. 02. The speed of atomic motion reflects the temperature.

The faster the atom moves, the higher the temperature. If the temperature is low, it means that the atom moves slowly. If we continue to cool it, the motion of atoms will gradually become static. When the temperature really reaches absolute zero, all atoms will stop moving completely, and both kinetic energy and potential energy will disappear, but the problem is that energy will not disappear out of thin air. Absolute zero means that temperature and energy are gone, which is an unattainable state. Even the light we see now, in the world of absolute zero, may no longer exist, and everything will turn into nothingness. This is no joke. Because according to the existing theory is true, we can't imagine a world without energy and heat, so this absolute zero degree can only be infinitely approached by human beings, but it can't be achieved.