Chip transistor density is currently measured in nanometers. A human hair is 100,000 nanometers wide. By 2025 we’ll be talking about chip transistor density in angstroms. A human hair is 1,000,000 angstroms wide.

Imec Presents Sub-1nm Process and Transistor Roadmap Until 2036: From Nanometers to the Angstrom Era
www.tomshardware.com