What is a stationary wave?
A stationary wave forms when there are two waves of equal frequency (or wavelength) travelling in opposite directions, passing through one another. Interference occurs, with constructive interference at antinodes and destructive interference at nodes. That is to say, there is maximum displacement at antinodes and no displacement at nodes. Particles either side of the nodes are in antiphase (between two nodes in phase). Amplitude may vary between nodes.
SP
Related Physics A Level answers
All answers ▸Why is the classical model of light insufficient in explaining the photoelectric effect?
Which are the types of carrier movements and how are they activated
What is the mathematical relationship between the frequencies of musical notes that we perceive identical, but at different octaves?
What is the maximum frequency photon of one of the photons produced when a electron and positron annihilate each other?