Now, the x axis is our temperature given in Celsius. And so as we go from left to right, we essentially heat our solution. We increase our temperature and notice what we get from our experimental data. The experimental data basically gives us the following curve. And what this curve tells us is there is an abrupt change in the relative absorbance at a specific temperature value. And that's exactly why we call this dissociation process melting, because melting describes the process by which we essentially dissociate this DNA molecule very quickly at a specific temperature value.