It is impossible to reach the absolute zero
The physical behavior of all
materials is described by a theory
called"Thermodynamics", which is based on three
fundamental postulates known as the "basic laws of
thermodynamics". These laws cannot be proved. They
are basic assumptions that we accept in order to
explain the multitude of phenomena in materials
The unattainability of absolute zero
is one of these basic law (the third law). The
other laws are the conservation of energy (the
first law), and the fact that the entropy of the
universe cannot decrease (the second law).
"world record" for the lowest temperature is
achieved using "laser cooling" techniques, which
can bring small systems (of the size of about
1billion atoms) down to 1 billionth degree Kelvin.
It is the heat input from the outside world (or
"heat leak") into an experiment which prevents
The third law of thermodynamic
can be also related to quantum mechanics(which
governs the behavior of law temperature systems).
By definition,absolute zero is the temperature at
which all molecular motion ceases and no energy
present. But quantum mechanics (Heisenberg
Uncertainty Principle) states that even at
absolute zero some energy must be present.
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