7.5 Furness
graphic

Plank, in 1901, introduced discreteness or quanta into the hitherto continuous world of Newton.  In so doing he opened the door to the complete replacement of Newton's rules of mechanics by what is naturally called quantum mechanics, in which the certain world we see around us is replaced by one in which nothing is certain, nothing is as it seems. We now know that all matter is composed of waves of probability, and the certitude of the classical world has vanished.
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