In QM people always talk about probability amplitudes and probability densities, but I've never really given these terms much thought and have always just ignored the density/amplitude part and focussed on the probability part.(adsbygoogle = window.adsbygoogle || []).push({});

So what is meant by a probabilitydensity- is it what it sounds like, ie. a probability per unit volume, or something different? And how is this distinct from a probability amplitude?

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# The real meaning of probability density?

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