Standing Sound Waves
Operation: Press the demonstration song button, or operate the frequency selection button to choose different frequencies. The speaker emits different sound waves. You can observe the vibration of particles in the acrylic tube at different frequencies, and observe the changes at the maximum amplitude and zero amplitude positions. 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 different sound waves. 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 wave and reflected wave 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 is reflected at the other end of the tube to form a reflected wave. At specific frequencies, the incident wave and reflected wave 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, radio, and other disciplines; they can be used to measure wavelength or determine the natural frequency of a vibrating system.
Options
- 0.9×0.6×1.10 0.9×0.6×1.10Overall Dimensions: 0.9×0.6×1.10 Brand: KexMall Model: PopsciCat-Medium-025 Materials: ①Base: 2.0mm cold-rolled steel plate, dimensions not less than 0.75×0.45×0.7m, surface baked paint (or electrostatic powder coating), reserved foot openings for later height adjustment and four-corner balance, reserved AC female socket position for power supply to electrical exhibits ②Tabletop: high-quality flame-retardant fiberglass reinforced plastic, total thickness with edge ≧100mm ③Instruction sign: acrylic UV high-precision inkjet printing, thickness ≧3mm ④Maintenance door: 2.0mm cold-rolled steel plate, surface baked paint (or electrostatic powder coating) ⑤Demonstration particles: PTFE foam particles, diameter Φ1-2 ⑥Demonstration device support: 304 stainless steel Main Configuration: ①Electrical control: electrical logic control system, equipped with Guanjian® K1 type PLC controller with protection specially for science exhibits ②Switching power supply: AC-DC S-60-12/24 input AC100-240V, 50/60Hz, output power 60W ③Button: self-resetting 22mm stainless steel metal button with ring light; LED voltage not higher than 12V to avoid high voltage leakage risk; mechanical life: 1 million times; protection level: IP67; protection method: waterproof. ④Speaker: custom-made speaker Energy Requirements: AC100-240V, 50/60Hz 100W (standard three-wire socket)
Operation: Press the demonstration song button, or operate the frequency selection button to choose different frequencies. The speaker emits different sound waves. You can observe the vibration of particles in the acrylic tube at different frequencies, and observe the changes at the maximum amplitude and zero amplitude positions. 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 different sound waves. 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 wave and reflected wave 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 is reflected at the other end of the tube to form a reflected wave. At specific frequencies, the incident wave and reflected wave 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, radio, and other disciplines; they can be used to measure wavelength or determine the natural frequency of a vibrating system.