Acoustic standing wave
- In stock with stable lead times — single units or complete sets
- Size, appearance and interaction can be adapted to the museum’s theme
- For science museums, campus science rooms, community science centers and mobile science museums
- Export packing and overseas on-site installation support
1. Content:
Exhibit items are composed of acrylic tubes with foam beads, loudspeakers and sound control devices. A visible foam ball is installed in the acrylic tube as the medium, and one end is connected with the loudspeaker to form a sealed space for displaying standing sound waves. Activate the exhibition items, and the audience adjusts the frequency of the sound through the knob, observing the particles inside the organic glass tube vibrating with the standing wave. The amplitude of each point at the intersection of two waves is the sum of the amplitudes caused by the two waves, and the point with the largest superimposed amplitude is called the antinode, where the particle vibration is most intense; The point with the smallest amplitude is called a node, where the particles are stationary and the amplitude is zero.
2. Principle:
V sound wave
Sound waves are longitudinal waves that propagate through air as a medium. Standing wave refers to the wave formed by the superposition of two columns of waves with the same frequency and amplitude, consistent vibration direction, and opposite propagation direction. The point with zero amplitude is called a node, and the point with the maximum amplitude is called a antinode. The vibration phases on both sides of the node are opposite. The distance between adjacent nodes or antinodes is half a wavelength.
V standing wave
A standing wave is generated by the superposition of two waves with the same amplitude, frequency, and vibration direction but opposite propagation directions. Using a speaker to emit incident sound waves, this incident sound wave is reflected at the other end of the tube to form a reflected wave. The two columns of incident and reflected sound waves are superimposed on each other (for ease of observation, a liquid is made to vibrate under the action of sound waves). The amplitude of each point at the intersection of two waves is the sum of their respective amplitudes. The point with the highest amplitude of superposition is called the antinode, where the liquid particle vibrates the most violently and the point with the smallest amplitude is called the node. The liquid particle at the node is stationary and has zero amplitude.
3. Purpose:
Standing wave refers to a distribution state formed along a transmission line by two types of radio waves with the same frequency, amplitude, and vibration direction but opposite transmission directions. One of the waves is usually a reflection of the other wave. On the waveform, the positions of nodes and antinodes remain constant, giving the impression of being "stationary". Exhibition items showcase the effect of standing waves through interactive devices.