Characteristics of Stationary or Standing Waves #8211; (i) There are centain points in the medium in a standing wave, which are permanently at rest. These are called as nodes, (ii) Distance between two consecutive nodes is λ/2, (iii) Some points in the medium in a standing wave, have maximum amplitude. These are called as anti-nodes, (iv) Distance between two consecutive anti-nodes is λ/2. (In figure).