Standing Sound Waves
Operation: Press the demonstration song button or operate the frequency selection button to choose different frequencies. The speaker emits sound waves of different frequencies. Observe the vibration of particles in the acrylic tube at different frequencies, and observe the changes at the maximum amplitude and zero amplitude points. Function Overview: The exhibit consists of a speaker, acrylic tube, foam particles, frequency display, operation buttons, etc. The acrylic tube is filled with solid colored particles, and one end is connected to the speaker to form a sealed space for demonstrating acoustic standing waves. Operate the buttons to select different frequencies; the speaker emits sound waves of different frequencies. The incident sound wave propagates from one end of the acrylic tube to the other and generates a reflected wave. At specific frequencies, the incident and reflected waves superimpose to form a standing wave. The point with maximum amplitude is called an antinode, and the point with minimum amplitude is called a node. When adjusting the sound source frequency, the digital display synchronously shows the current sound frequency. At this time, the positions of antinodes and nodes and the vibration amplitude change accordingly, creating the phenomenon of small particles appearing to dance. Scientific Principle: Why do the small particles in the tube dance? Because the incident sound wave emitted by the speaker reflects at the other end of the tube to form a reflected wave. At specific frequencies, the incident and reflected waves superimpose to form a standing wave. The point with maximum amplitude is called an antinode, and the point with minimum amplitude is called a node. When adjusting the sound source frequency, the positions of antinodes and nodes and the vibration amplitude change accordingly, creating the phenomenon of small particles appearing to dance. Standing waves have important applications in acoustics, optics, and radio science; they can be used to measure wavelength or determine the natural frequency of a vibrating system.
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- China Science and Technology Museum Standard Edition CSTM Standard EditionDimensions (unit: m): 0.75×0.68×1.10 Brand: KexMall Model: PopsciCat-Mobile-032 1. Materials: ① Base: Flame-retardant ABS injection molding, thickness ≧4mm ② Tabletop: Compact laminate, thickness ≧12mm ③ Instruction sign: Acrylic UV printing ④ Tabletop fasteners: Standard triangular locks ⑤ Demonstration particles: PTFE foam particles, diameter Φ1-2 ⑥ Demonstration device support: 304 stainless steel 2. Main Configuration: ① Electrical control: Electrical logic control system, equipped with KexMall® K1 special PLC controller with protection for science exhibits ② Switching power supply: AC-DCS-60-12/24 input AC100-240V, 50/60Hz, output power 60W ③ Buttons: Self-resetting 22mm stainless steel metal buttons with ring light ④ Speaker: Custom speaker 3. Energy Requirements: AC100-240V, 50/60Hz 200W
Operation: Press the demonstration song button or operate the frequency selection button to choose different frequencies. The speaker emits sound waves of different frequencies. Observe the vibration of particles in the acrylic tube at different frequencies, and observe the changes at the maximum amplitude and zero amplitude points. Function Overview: The exhibit consists of a speaker, acrylic tube, foam particles, frequency display, operation buttons, etc. The acrylic tube is filled with solid colored particles, and one end is connected to the speaker to form a sealed space for demonstrating acoustic standing waves. Operate the buttons to select different frequencies; the speaker emits sound waves of different frequencies. The incident sound wave propagates from one end of the acrylic tube to the other and generates a reflected wave. At specific frequencies, the incident and reflected waves superimpose to form a standing wave. The point with maximum amplitude is called an antinode, and the point with minimum amplitude is called a node. When adjusting the sound source frequency, the digital display synchronously shows the current sound frequency. At this time, the positions of antinodes and nodes and the vibration amplitude change accordingly, creating the phenomenon of small particles appearing to dance. Scientific Principle: Why do the small particles in the tube dance? Because the incident sound wave emitted by the speaker reflects at the other end of the tube to form a reflected wave. At specific frequencies, the incident and reflected waves superimpose to form a standing wave. The point with maximum amplitude is called an antinode, and the point with minimum amplitude is called a node. When adjusting the sound source frequency, the positions of antinodes and nodes and the vibration amplitude change accordingly, creating the phenomenon of small particles appearing to dance. Standing waves have important applications in acoustics, optics, and radio science; they can be used to measure wavelength or determine the natural frequency of a vibrating system.
- Optimized Popular Edition Optimized EditionDimensions (unit: m): 0.75×0.68×1.10 Brand: KexMall Model: PopsciCat-Mobile-032 1. Materials: ① Base: Flame-retardant ABS injection molding, thickness ≧4mm ② Tabletop: Compact laminate, thickness ≧12mm ③ Instruction sign: Acrylic UV printing ④ Tabletop fasteners: Standard triangular locks ⑤ Demonstration particles: PTFE foam particles, diameter Φ1-2 ⑥ Demonstration device support: 304 stainless steel 2. Main Configuration: ① Electrical control: Electrical logic control system, equipped with KexMall® K1 special PLC controller with protection for science exhibits ② Switching power supply: AC-DCS-60-12/24 input AC100-240V, 50/60Hz, output power 60W ③ Buttons: Self-resetting 22mm stainless steel metal buttons with ring light ④ Speaker: Custom speaker 3. Energy Requirements: AC100-240V, 50/60Hz 200W
Operation: Press the demonstration song button or operate the frequency selection button to choose different frequencies. The speaker emits sound waves of different frequencies. Observe the vibration of particles in the acrylic tube at different frequencies, and observe the changes at the maximum amplitude and zero amplitude points. Function Overview: The exhibit consists of a speaker, acrylic tube, foam particles, frequency display, operation buttons, etc. The acrylic tube is filled with solid colored particles, and one end is connected to the speaker to form a sealed space for demonstrating acoustic standing waves. Operate the buttons to select different frequencies; the speaker emits sound waves of different frequencies. The incident sound wave propagates from one end of the acrylic tube to the other and generates a reflected wave. At specific frequencies, the incident and reflected waves superimpose to form a standing wave. The point with maximum amplitude is called an antinode, and the point with minimum amplitude is called a node. When adjusting the sound source frequency, the digital display synchronously shows the current sound frequency. At this time, the positions of antinodes and nodes and the vibration amplitude change accordingly, creating the phenomenon of small particles appearing to dance. Scientific Principle: Why do the small particles in the tube dance? Because the incident sound wave emitted by the speaker reflects at the other end of the tube to form a reflected wave. At specific frequencies, the incident and reflected waves superimpose to form a standing wave. The point with maximum amplitude is called an antinode, and the point with minimum amplitude is called a node. When adjusting the sound source frequency, the positions of antinodes and nodes and the vibration amplitude change accordingly, creating the phenomenon of small particles appearing to dance. Standing waves have important applications in acoustics, optics, and radio science; they can be used to measure wavelength or determine the natural frequency of a vibrating system.