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hi everyone and welcome back to my channel so in my last Pi tutorial I was explaining about how you can set up your own Pi setup and how you can a laser and a camera to understand the flow field so in in the same video I showed you a video of how a flow over an air foil would look like so Iamp;#39;ve taken two images from the same video mind you that these are consecutive images you should not take any two random images because they wonamp;#39;t give you the good result that you would be looking for so this is an image at instant one Iamp;#39;m calling it as instant one to show that itamp;#39;s the first photo and this image is taken just after the image one is taken so this is called being called as instant two as you can see that there is a vertical shift in these two images and from this we can qualitatively say that the flow is in y direction or to be more specific in the negative y direction and today we want to see what is the displacement and furthermore because we know what
