Hello, I've been reading about attenuation, and I wonder if there's a way to determine the distance to your source. Forgive my poor writing; I'm new to the topic. I understand that equation for linear attenuation is I = I0e-μxwhere: I = intensity I0 = initial intensity μ = attenuation coefficient x = distance traveled through medium My question is this: if I have the information μ and I, is there some way to determine x, and/or I0? It seems that I need to find either of those to find them both, so I wonder if there's some other measurements I could take that would make this possible. For a simple-minded example, would it be possible to take measurements of intensity at a variety of perpendicular distances in order to determine the geometric spreading and work backward from that to find distance x? Thank you kindly for your time and knowledge.