Antinode

Key Stage 5

Meaning

An antinode is a point in a stationary wave pattern where the amplitude is at a maximum.

About Antinodes

• Antinodes occur at positions where constructive interference happens.
• They are the opposite of nodes, where amplitude is zero.
• Found in standing wave patterns in physics, such as on strings or in air columns.
• The distance between consecutive antinodes is half the wavelength of the wave.
• Antinodes are points of maximum energy transfer in the medium.
• In musical instruments, antinodes correspond to the points where the air column or string vibrates most strongly.
• The study of antinodes and nodes is essential in understanding resonance and harmonic frequencies.

Examples

• The loudest points in a musical instrument's sound wave are antinodes.
• Antinodes can be visualized in vibrating string experiments.