Reflection can be of two types, depending on whether the boundary is 'soft' or 'rigid'. If the wave is going from a more rigid medium into a softer medium the reflected wave will have the same phase a...Reflection can be of two types, depending on whether the boundary is 'soft' or 'rigid'. If the wave is going from a more rigid medium into a softer medium the reflected wave will have the same phase as the incoming wave. Now check the sine wave check box to see what happens when a sine wave hits the two types of boundaries. Although the reflecting sine waves in both cases interacts with the incoming wave to form a standing waves there is a slight difference between the two.
