(ORDO NEWS) — Scientists at the Massachusetts Institute of Technology (MIT) made the gas “translucent” for the first time. The researchers achieved this using an effect predicted over 30 years ago.
This is the Pauli principle. It states that two or more identical fermions (a kind of elementary particles) cannot simultaneously be in the same quantum state in a quantum system.
It is explained that if fermions were in the same quantum state, all objects would fall through the surfaces, and in general the objects themselves would not be able to form.
At the same time, it turned out that there is a way to bring fermions closer in state to each other. It is required to cool them to temperatures close to absolute zero and bring them closer to each other.
Under these conditions, fermions cannot absorb or reflect light. The photons begin to fly freely through the atoms. The substance becomes transparent.
Scientists have been able to achieve this experimentally. They cooled the cloud of lithium atoms and brought the particles closer together. As a result, the substance became 38% more “transparent” than at room temperature.
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