Size - Couverture souple

Kuzyk, Mark G.

 
9781548451639: Size

Synopsis

This tiny book takes on the huge topic of size, or more precisely, length. There is more to this topic than you might expect. Quantum mechanics shows how things become fuzzy as they get smaller, removing the sharp edges that are needed to measure length. More importantly, it becomes difficult to know when one objects ends and the other begins, making a count of the number of objects ambiguous. Since the markings on a ruler can be thought of as objects, when they are made small enough, they also become too fuzzy to read. Other strange behavior takes hold as the distance between rulings gets small, including rulers that become shorter and the evaporation of a ruler when it gets near the object being measured. This volume takes the reader on a journey, starting with the universal concept of one-to-one correspondence -- with a diversion to compare the behavior of bosons and fermions -- and ending with a description of entanglement between a ruler and object. How entanglement affects our classical notion of measurement is also discussed. A firm grounding of quantum mechanics at the undergraduate level is required to appreciate and follow the development of the arguments. Your comments are welcome. See the book's preface for the web address or copy it here: http://unknownphysicist.blogspot.com/p/blog-page.html

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