Explore the fascinating world of normal modes of oscillation for a system consisting of three masses connected by four springs in one dimension. Learn step-by-step how to determine these modes, building upon the knowledge from the two-mass system. Gain insights into the mathematical principles and physical concepts underlying this more complex arrangement. Access a Python code example to create a visual model of the system, enhancing your understanding through interactive simulation. Deepen your grasp of oscillatory motion and its applications in various fields of physics and engineering.