Wow, this explains why production of a mask takes 5 days (as said in first video): https://en.wikipedia.org/wiki/Electron-beam_lithography https://en.wikipedia

Wow, this explains why production of a mask takes 5 days (as said in first video): https://en.wikipedia.org/wiki/Electron-beam_lithography https://en.wikipedia.org/wiki/Electron-beam_lithography