Following the process's formal announcement to the Academy weeks earlier, February drew wide public and scientific attention to Louis Daguerre's method of fixing images on silvered copper plates. Word spread rapidly, and within months amateurs and entrepreneurs across Europe and America were building cameras and buying chemicals to try the astonishing new art of capturing a fixed image from life.
Daguerre had spent over a decade experimenting, first with his partner Nicéphore Niépce and then alone after Niépce's death in 1833, chasing a way to make an image appear on a light-sensitive surface and then stop it from disappearing again. His breakthrough came partly by accident: a broken thermometer supposedly spilled mercury vapor onto an exposed plate in a cupboard, and the fumes rendered a faint latent image startlingly visible.
The French government, recognizing the invention's importance, purchased the rights from Daguerre and Niépce's son in exchange for lifetime pensions, then gave the process to the world for free—an unusually generous act of public science patronage that ensured daguerreotypes spread almost immediately to studios in London, New York, and beyond.
Within just a few years, daguerreotype portrait studios opened in cities across two continents, and for the first time ordinary people who were not wealthy enough to commission a painted portrait could afford a small, precise, silvery image of their own face—a democratization of the human likeness that changed how families remembered each other forever.
Key people: Louis Daguerre