How Does a Transistor Work?

Veritasium t-shirts! Supported by TechNYou: Subscribe to Veritasium - it’s FREE! How does a transistor work? Our lives depend on this device. When I mentioned to people that I was doing a video on transistors, they would say “as in a transistor radio?“ Yes! That’s exactly what I mean, but it goes so much deeper than that. After the transistor was invented in 1947 one of the first available consumer technologies it was applied to was radios,