Originally published in 1915, this book presents an account of the principles of harmonic motion and their application in a laboratory environment.George Frederick Charles Searle (18641954) was a British physicist who worked at the Cavendish Laboratory in Cambridge for 55 years. Originally published in 1915, this book presents an account of the principles of harmonic motion and their application in a laboratory environment. Illustrative figures are incorporated throughout.George Frederick Charles Searle (18641954) was a British physicist who worked at the Cavendish Laboratory in Cambridge for 55 years. Originally published in 1915, this book presents an account of the principles of harmonic motion and their application in a laboratory environment. Illustrative figures are incorporated throughout.George Frederick Charles Searle (18641954) was a British physicist who worked at the Cavendish Laboratory in Cambridge for 55 years. Originally published in 1915, this book presents an account of the principles of harmonic motion and their application in a laboratory environment. Illustrative figures are incorporated throughout. This book will be of value to anyone with an interest in physics, mechanics, the history of science and the history of education.1. Elementary theory of harmonic motion; 2. Experimental work in harmonic motion; Experiment 1. Determination of g by a simple pendulum; Experiment 2. Harmonic motion of a body suspended by a spring; Experiment 3. Harmonic motion of a rigid body suspended by a torsion wire; Experiment 4. Study of a system with variable moment of inertia; Experiment 5. Dynamical determination of ratio of couple to twist for a torsion wire; Experiment 6. Comparison of the moments of inertia of two bodies; Experiment 7. Experiment with a pair of inertia bars; Experiment 8. Determination of the moment of inertia of a rigid pendulum; Experiment 9. Experiment on a pendulum with variable moment of inertia; Experiment 10. Determination of g by al#A