Antinode
Definition
An antinode is a point in a standing wave where the amplitude of oscillation is at its maximum. Antinodes occur at positions where constructive interference occurs.
5 Must Know Facts For Your Next Test
- Antinodes are located between nodes in a standing wave pattern.
- In a vibrating string fixed at both ends, antinodes are the points that move the most.
- The distance between two consecutive antinodes is half the wavelength ($\lambda/2$).
- Antinodes result from the constructive interference of two waves with the same frequency and amplitude traveling in opposite directions.
- In sound waves within a tube open at both ends, antinodes form at the open ends.
Review Questions
- Where do antinodes occur in a standing wave pattern?
- What is the distance between two consecutive antinodes?
- How do antinodes form as a result of wave interference?
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Related terms
Node: A point in a standing wave where there is no displacement due to destructive interference.
Wavelength: The distance over which a wave's shape repeats, typically measured from crest to crest or trough to trough.
Standing Wave: A wave that remains stationary, characterized by nodes and antinodes formed by the superposition of two traveling waves moving in opposite directions.
