How Humans Learned to Boss Electrons Around
From the stray current Edison found in a light bulb to a switch that steers electrons on command — vacuum tube, PN junction, transistor, the short history of taming electricity.
5 parts · Jun 20, 2026 – Jun 20, 2026
From the stray current Edison found in a light bulb to a switch that steers electrons on command — vacuum tube, PN junction, transistor, the short history of taming electricity.
A circuit that can remember a single 0 or 1, grown step by step into a register — and why cache, not clock speed, is what makes a gaming CPU fast.
Hard drives store with magnetism, SSDs trap electrons in an insulator, RAID trades extra disks for reliability — plus the truth behind that scary "RAID 5 rebuild fails 99% of the time."
Main memory and video memory came from the same place and then split — one obsesses over latency, the other over bandwidth, and HBM ends up bolting memory onto the GPU's roof.
Light is both the chisel that carves chips (lithography) and the paint that makes screens (quantum dots, AR waveguides) — how humans learned to tame it in the space of a silicon chip.
© Xingfan Xia 2024 - 2026 · CC BY-NC 4.0