I was happy to encounter this book last Thursday: a biography of Édouard Branly. He was the inventor of the coherer, one of the first semiconductors, essential for the invention of radio. A device whose working principles are still not fully understood, one and a half century later.

#ÉdouardBranly #PhilippeMonodBroca #mediaarcheology #mediaarchaeology #systemsthatmatter