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Quick-stepping hydrogen causes light bulb to flicker

2 monthes ago   |   By Ars Technica

Enlarge (credit: Witthaya Prasongsin / Getty Images )
At one point in my life, I spent several years trying to understand surfaces. It had come as a shock to me to learn that surfaces rule the world. It came as even more of a shock to discover how difficult it was to understand or even measure what is happening at a surface. That makes a light switch made from a single hydrogen molecule sitting on a surface very interesting for what it can tell us them.
Before we get to the good stuff, we need to take a trip down memory lane. What makes surfaces so important? What makes them so hard to...
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