PH6CRT10: RELATIVITY AND SPECTROSCOPY
Module I
Special Theory of Relativity
(18 hours)
Inertial and non inertial frames of reference- Galilean transformation, Significance of
Michelson-Morley experiment, Postulates of Special Theory of Relativity, Lorentz
transformation, Spatial contraction, Time dilation, composition of velocities, mass of
moving particle, Equivalence of mass and energy. Introductory concept of general theory
of relativity.
Text Book: Modern Physics, Kenneth S Krane.
Concepts of modern Physics, Arthur Beiser
Module II
Atomic Spectroscopy
(21 hours)
Historical introduction. Electrostatic spectrum. Types of spectra. Absorption and emission
of light by atoms, quantum theory, early atom models – Bohr model, electron spin and
magnetic moment, Exclusion principle, Stern-Gerlach experiment, Vector atom model,
quantum numbers associated with vector atom models, Total angular momentum and LS
coupling, fine structure of Sodium D lines, Zeeman effect, quantum mechanical
explanation for anomalous Zeeman effect, Paschen-Back effect.
Text Book: Molecular structure and Spectroscopy, G Aruldas.
Concepts of modern Physics, Arthur Beiser

Module III
Molecular Spectroscopy
(21 hours)
Molecular energy levels. Electronic, rotational and vibrational energies, rotational
spectra, explanation in terms of rigid rotator model, vibrational energy levels, explanation
in terms of harmonic oscillator.
Electronic energy levels of atoms, Fluorescence and phosphorescence, Raman effect –
experimental arrangement and result, classical theory and its failure, quantum theory of
Raman effect.
Curriculum and syllabus 2017 admissions onwards56
B Sc Programme in Physics, Mahatma Gandhi University
IR and Microwave spectroscopes.
Text Book: Fundamentals olf Molecular Spectroscopy, C.Banwell and E. Mccash.
Molecular structure and Spectroscopy, G Aruldas.
NMR and ESR Spectroscopy
(12 hours)
NMR Spectroscopy- Basic principles and instrumentation- Medical applications of NMR.
Text Book: Molecular structure and Spectroscopy, G Aruldas – Chapter 10 (Sections
10.1, 10.2,10.3 and 10.19).
ESR Spectroscopy- Basic principles and instrumentation.
Text Book: Molecular structure and Spectroscopy, G Aruldas – Chapter 11 (Sections
11.1, 11.2 and 11.3).