The TED Interview cover image

Randall Munroe answers your wildest questions

The TED Interview

CHAPTER

What if My Phone Was Based on Vacuum Tubes?

Vacuum tubes were used in the first computers of the 40s and 50s. A modern iPhone would take up a couple of city blocks, he says. It's just going to be much bigger, take much more power, and be much slower. The problem with vacuum tubes is that they produce a lot of heat.

00:00
Transcript
Play full episode

Remember Everything You Learn from Podcasts

Save insights instantly, chat with episodes, and build lasting knowledge - all powered by AI.
App store bannerPlay store banner