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Physics, Astronomy & Cosmology / Re: What is spacetime made of?
« on: 01/03/2018 19:54:02 »
Well Planck's constant has a well defined value as a quantum mechanical action. If either space or time were quantised it would have to be in Planck units. We have the Planck length and Planck time that could fit the bill. Does it make sense to consider motion to be defined in multiples of these units? Well the speed of light is defined as 1 Planck length over 1 Planck time. So your quanta has to be less than that. Otherwise everything has to move at the speed of light. Therefore the quanta, if they exist, are impossible to measure.
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