1. The problem statement, all variables and given/known data Imagine a interference pattern like the common water-wave interference pattern. What effect would decreasing the distance between the 2 wave sources have on the interference pattern? 2. Relevant equations 3. The attempt at a solution A change in the distance between the two sources will also alter the number of lines. When the distance is decreased between the wave sources the interference pattern will become larger ( larger diffraction ) and the angles between the nodal lines would become greater, and the wavelength of the resulting waves would also decrease. I'm not very confident in my answer. I tried to visualize this in my mind but it was difficult. I tried to look for some ripple simulations to help me but I couldn't find one. Is my answer correct? I tried to visualize it but I just couldn't. I just took examples from my book and compared them. I'm I missing anything important or am I wrong? Thank you in advanced.