Explore the pivotal era of theoretical physics through Arthur Eddington’s groundbreaking search for a fundamental theory. This insightful volume chronicles the scientific revolution that birthed relativity and quantum mechanics, offering a unique perspective on the quest for a unified understanding of the universe. Kilmister’s lucid analysis delves into Eddington’s influential thought processes and contributions. Essential reading for physics students, astrophysicists, and science history buffs in India seeking to comprehend the foundational discoveries that redefined our cosmic view.