Revisiting Max Planck’s idea: Planck’s Law, Casimir force and Planck’s constant

Max Planck (1858-1947) is one of the most renowned scientists in physics. He is even a commonplace character in humanities courses since he was one of the European scientists who most influenced the opinion and perspective of European society. This work intends to present a pedagogical introduction to the quantization of energy, Planck's most valuable contribution to science. This is an important topic that is frequently included in physics and engineering curricula but is often presented in a vague and forced manner. This work seeks a more intuitive introduction to the quantization of energy by presenting Planck's law and the Casimir force, along with a practical activity that students can perform to directly measure Planck's constant and achieve a more cohesive understanding of the concepts