Monthly Archives: August 2012

This is the first article where I will focus on physics. Or rather on the methods used in experimental physics.

The aim of physics is to learn something about the world we live in. But how do we do that? Everybody knows that we have to do experiments. You do an experiment, you look at the data and then you learn something. Sounds straight forward, but — as always — the devil is in the details.

In this article I want to use the simple example of measuring the speed of sound to show you how to turn a set of data into knowledge, using free software.

Also, I needed something to do with my new TDC. 😉

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Now that I have a proper power supply, I can start building proper lab equipment and the first thing I set out to build was a Time to Digital Converter (TDC). Well, it’s really just a stop watch with microsecond resolution, but TDC sounds much fancier. 😉

And here it is:

Now, how does this thing work?

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