One of the first things I learned as a physicist was the Measurement Principle. Roughly speaking, it states that you can’t measure anything accurately because the measuring process will inevitably affect the thing you are measuring. Now in normal life the effect is minimal and probably would not affect your shelf-building project or the purchase of new shoes, but in the case of sub-atomic particles the effect is more drastic. Instead of using rulers you have to use underground particle accelerators and such things which explode apart the thing you want to measure and (if I’ve understood correctly) you then measure the resulting debris with rulers. Continue reading “The measurement principle – encountering divine love”
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