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Principles of Quantum Mechanics by Dr Singh Tyagi

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Chapter 3

Wave Packets and Uncertainty Principle

Imagination is more important than knowledge.

—Albert Einstein

3.1  INTRODUCTION

What we have learnt in the previous chapter is the fact that the behaviour of microscopic system depends upon the type of experimental set up we choose to probe the system. The electrons are detected like particles in a detector, whereas the same electrons behave like propagating waves in a two-slit experiment (similar is the case with radiations). We have to describe dynamics of microscopic particles e.g. electrons. The dynamics shall be described through some equations of motion. Therefore, we have to find out equation of motion of microscopic particles which should be valid under all circumstances. When the electrons ...

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