https://hackaday.com/2015/11/22/the-first-radio-sets-a-spark-gap-and-a-coherer/
The First Radio Sets: A Spark Gap And A Coherer | Hackaday
Nov 22, 2015 - [Ashish] let us know about his experiments in recreating the earliest type of radio set: a spark-gap transmitter and iron-filings coherer. He goes through the...
the firstradio setsspark gapcohererhackaday
https://www.instructables.com/3D-Printed-Coherer/
3D Printed Coherer (with Pictures) - Instructables
3D Printed Coherer: French physicist Edouard Branly in the 1890s investigating the electrical characteristics of finely divided conductors such as metal...
3d printedcohererpicturesinstructables
https://gigazine.net/gsc_news/en/20240315-cohere-effect
What is the 'coherer effect' that allows you to light up a light bulb or communicate wirelessly...
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