Unlike all the other men in my family (and most of my friends) I am not an electrical engineer by training. I’ve spent my life around electrical engineering, and although I’ve known about the historical details of the invention of the transistor since I was a wee lad, I can’t claim to have understood how the first transistor worked until I saw Bill Hammack’s Engineer Guy video for this week. So, on a more personal level this week: [Thanks, Bill!]

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Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and makezine.com. My work has also appeared in ReadyMade, c’t – Magazin für Computertechnik, and The Wall Street Journal.


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