Arun
Last Activity: 7 Years ago
A progressive wave has amplitude equal over all points, has net energy flow"
"A standing wave is formed when two identical waves travelling in opposite directions meet and superimpose on each other. This usually happens when one wave is the reflection of the other. It has no net flow of energy"
As shown in the definitions, a progressive wavehas equal amplitude over all points - there is no particular position/point in the wave where amplitude drops. On a stationary wave however, when the two waves combine/superimpose on each other, they form nodes and anti-nodes based on the wavelength/frequency of the wave.