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Veritasium
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These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.
What is quantum mechanical spin
This video explains the term spin. It introduces the idea of a magnetic dipole in electrons and shows how, in an external magnetic field, electron spins can be aligned or opposed (different quantum states).
However, when considering just two electrons coupled together the possible quantum positions becomes complex. The coupled spins of the UD and DU states are unstable and so cannot be simply described in these terms. There is a continuous transition between them. This quantum mechanical property leads to superposition and is employed in quantum computers.
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