Thank you for your welcome.
The problem arises because of the nature of the graph.
What is happening in the experiment is that the surface tension of a liquid is being measured as the area is being compressed. Therefore, as area(on x axis) reduces, the surface tension (on y axis) increases...
Hi there,
I was wondering if someone could help clarify something for me.
I am using excel to find the area under a curve. I am using the :
(B1+B2)/2*(A2-A1) equation to do it. However, due to the nature of the graph, all the value I am getting are negative.
The values on the X axis decrease...