Tuesday, 30 October 2018
Flatford Mill: group velocity
Something caused these circular ripples at Flatford Mill, scene of The Haywain. What was noticeable is that the wave group stayed together and did not disperse from each other as they spread out. Looking it up https://en.wikipedia.org/wiki/Group_velocity that must mean that there were waves of only one frequency within the group. It suggests that the group velocity must equal the phase velocity.