BBC Science The Theory of (nearly) Everything 2019

(Martin Jones) #1

THE FUNDAMENTALS OF PHYSICS


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Y When Ma x Planck sug gested that light wa s made up of


particles, he completely overturned classical physics

UNDERSTANDING


QUANTUM PHYSICS


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tricky subject. But Dr John Gribbin is here to reveal why


quantum physics is relevant to all our lives


QWhat is quantum physics for?


A


Quantum physics may seem like
a pretty esoteric topic with no
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from the case. Quantum physics is the
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among many other things. The
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physics. Quantum physics is the
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more basic than that!

QWave, particle or both?


A


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terms of the wave equations of James
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are particles. They interact with one
another – as when an electrically
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waves – but they always retain their
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changes happen continuously.
Quantum physics overturns all of
that. The first clue that something
other than classical physics was

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behaving as a wave. Then it was
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if t hey were waves. Wave-particle
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the heart of quantum physics.

QDoes quantum theory rule?


A


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whole story of the split between
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as you make allowance for all the
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you can calculate everything that will
ever happen to it. This applies to all
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