In 1890, Edouard Branly created the first device for converting radio waves to a pulsed DC current. #Poetry #Science #History #Electromagnetism #Coherer #Branly (https://sharpgiving.com/thebookofscience/items/p1890d.html)
1890: Coherer - The book of science

In 1890, Edouard Branly created the first device for converting radio waves to a pulsed DC current.