O'Reilly logo

ReMaking History, Volume 3, 1st Edition by William Gurstelle

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 4 Lee de Forest and the Amplifier

c04uf001.psd

In this chapter we’ll delve into the early history of electronics. In Chapter 2 we met Samuel Morse and explored the science behind his telegraph. Morse’s telegraph is an electrical device. In this chapter we’ll look at electronic devices. Let’s begin by understanding the difference between an electrical device and an electronic one.

You likely already understand, perhaps intuitively, that light bulbs, space heaters, and kitchen mixers are electrical devices whereas computers, televisions, and radios are electronic ones. But what is the scientific difference?

It comes down to the way electricity ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required