Working in the Dark: Secrets, Silicon, and Light

In 1916, a tired chemist in a Berlin laboratory accidentally dipped his fountain pen into a pool of molten tin and pulled out the foundation of the digital world. He had no idea what he had done. 

In this episode

• Jan Czochralski: The Polish chemist whose mistake became the method used to grow nearly every silicon crystal wafer on Earth. 
• The occupation of Poland: The violent suppression of the Polish people by the Nazis and the Soviet Union (and what Jan Czochralski did during that time).
• Industrial alchemy: The complex, global journey required to turn stones into the microchips inside our devices.
• Extreme Ultraviolet Light lithography: The staggeringly precise process we use to paint microscopic circuits onto silicon canvases.

Episode Music

• James Opie / Nihilore, CC BY 4.0
  • Liberosis
  • Saved by a Simple Little Thing
  • Atomic Fire Light
  • Cathedral
  • This is Enough

Archival Audio

• Imperial War Museums, Non-Commercial License
  • First World War Battle Sounds, Sound: © IWM (21819)

Additional Reading

ASML. (2026). EUV lithography systems. https://www.asml.com/en/products/euv-lithography-systems

Branch Education. (2025, August 30). The $200M machine that prints microchips: The EUV photolithography system [Video]. YouTube. https://www.youtube.com/watch?v=B2482h_TNwg

Copley, M. (2024, September 30). A tiny town just got slammed by Helene. It could massively disrupt the tech industry. NPR. https://www.npr.org/2024/09/30/nx-s1-5133462/hurricane-helene-quartz-microchips-solar-panels-spruce-pine

Institute of National Remembrance. (2026). Jan Czochralski. Giants of Science. https://gigancinauki.pl/ge/biographies/8248,Jan-Czochralski.html

Kępa, M. (2017, August). Nazi collaborator or resistance fighter? The extraordinary story behind the man at the core of the digital revolution. Culture.pl. https://culture.pl/en/article/nazi-collaborator-or-resistance-fighter-the-extraordinary-story-behind-the-man-at-the-core-of-the

PV Education. (2024). Refining silicon. https://www.pveducation.org/pvcdrom/manufacturing-si-cells/refining-silicon

Sokolowski, G. (2023, July 17). Polish chemist creates the foundation for the semiconductor industry. PASI EDU. https://pasi-edu.org/polish-chemist-creates-the-foundation-for-the-semiconductor-industry/

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