Here's why:
* Standing waves are formed by the superposition of two waves traveling in opposite directions with the same frequency and amplitude.
* At antinodes, the waves interfere constructively, meaning their amplitudes add up, resulting in the largest possible displacement.
* In contrast, at nodes, the waves interfere destructively, resulting in zero displacement.
Think of it like this:
* Antinode: The waves are "in sync" at this point, their crests and troughs aligning, leading to a large combined amplitude.
* Node: The waves are "out of sync" at this point, with a crest meeting a trough, resulting in cancellation and zero amplitude.
You'll find antinodes spaced evenly along a standing wave, alternating with nodes.