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# Handout/note

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Class/lecture notes or handouts.

## Repository of Questions Answered in External, Masterpiece Sources

When we read a book, we come across important and useful statements, writeups and comments etc which are found only in masterpieces.  This repository collects a brief introduction to such peices of articles, from books by masters and other external sources. Frequently a question is asked with a brief answer and reference to the original work is provided.

## 19.4 Phase Shift for Square Well

QM-Lecture Notes-19
Quantum Theory of Scattering - Partial Wave Analysis

## 19.1 Partial Wave Expansion of Plane Waves

QM-Lecture Notes-19
Quantum Theory of Scattering - Partial Wave Analysis