La naissance et l'évanouissement de la matière

In this vivid early‑twentieth‑century lecture, the speaker takes us on a journey from the familiar stones beneath our feet to the invisible world of atoms, revealing how scientific certainty about matter’s permanence was upended just a decade ago. He explains, in clear and lively language, how atoms act like tiny solar systems, how their inner forces dwarf any industrial power we know, and why even the most inert‑looking substance is continually shedding its own structure. Listeners will discover the radical idea that matter is not an eternal substrate but a reservoir of energy that slowly dissolves into light, heat and electricity.

The talk then outlines a bold set of principles, from the gradual dissociation of atoms to the notion that force and matter are merely different expressions of the same underlying energy. By linking the evolution of chemicals to that of living organisms, the lecturer hints at a future science that could harness this endless transformation, promising a new source of power for humanity. The presentation is both a historical snapshot and a forward‑looking speculation that invites curiosity about the hidden life of the material world.