Some useful stuff

The dreaded Log-Log graph

 

If you are a Science or Engineering student, it is highly likely that you may have come across the Log-Log graph at some point, either in a lab session or in a textbook. The unfortunate thing is that, none of my teachers bothered to explain about the graph. I think it might have looked trivial for them, but I took a considerable amount of time to decipher the graph. So I thought that it might be nice to explain it to others who might be in my position.

Take a look at the following sample graph.Image result for log log graph

  1. The first 10 points on the x axis corresponds to the first 10 natural numbers.
  2. The next 10 points corresponds to numbers from 20 to 100.
  3. The next 10 points correspond to numbers from 200 to 1000 and so on.

So why use a Log-Log graph?

With a Log-Log graph, we can plot data over a large range. Sometimes, the data is so widely spread, plotting in a normal graph paper may not make any sense at all. Here is an example of Log-Log graph.Screenshot (64).png

A sample point – Take the case of Pb – a value of 1.2 is seen for muon momentum corresponding to 7 Mev/c