ApocOne

Sorry, I didn't know where to post this, feel free to move it though. I have a paper to write which is mainly based on WiFi frequencies and wave propagation (or something like it). The aim of the experiment is to investigate how the structure of an obstruction can alter radio wave propagation at different frequencies and wavelengths. Upon reaching results, applicable theory will be used in order to demonstrate and explain the phenomenon. Lastly, investigations will be made into how data transfer speeds are affected by this phenomenon as well. I need to know why exactly less interference is caused with shorter wavelengths. I’m going to conduct the experiment by pretty much putting a wall between the wifi router and my computer. Can anyone draw a diagram or explain how the wave propagates through the wall? Is it by diffraction? Besides that how does the thickness of the wall (and possibly height) affect this? What about the material the wall is made of? What if I tried to propagate a signal through pure concrete or a wall of lead? How will this affect it and why? I have some ideas, but I really want to get your opinions first so I can get a range of unbiased views. It’s a 4000 word essay, which means its fairly long (as compared to what I usually do in high school) so if anyone is willing to help it would really help me out.