Atomic Physics J B Rajam Pdf May 2026

About the Book:

"Atomic Physics" by J.B. Rajam is a popular textbook that provides an in-depth introduction to the principles of atomic physics. The book covers topics such as the structure of atoms, atomic spectra, and the behavior of electrons in atoms.

• The Atom and its Structure: A historical perspective leading to modern views.
• Bohr’s Theory: Detailed derivation and application to Hydrogen-like atoms.
• Vector Model of the Atom: Essential for understanding orbital angular momentum and spin.
• Quantum Mechanics Basics: Introduction to Schrödinger's equation and wave mechanics.
• X-Rays and Spectroscopy: Diffraction, absorption, and emission spectra.
• The Nucleus: An introduction to radioactivity and nuclear structure.

1. The Electron and Discharge Tubes

Experimental Breakthroughs

: Detailed accounts of pivotal experiments, such as Natural Radioactivity , X-ray diffraction , and the study of Cosmic Rays .

You can access versions or summaries of this classic text through several educational and archival platforms: Internet Archive:

Copyright Status:

J. B. Rajam passed away several years ago, but his works are published by S. Chand & Company (now S. Chand Publishing). Under Indian Copyright Act, 1957 (amendments up to 2012), copyright lasts for 60 years after the death of the author. Unless Rajam died before 1964 (which is unlikely, as his books were actively printed in the 1980s and 1990s), the book remains in copyright .

Artificial transmutation, cosmic rays, and the properties of the nucleus Finding the Text Online

Focus on Diagrams:

Rajam’s illustrations of experimental setups are legendary. Learn to replicate them for your exams.