![]() Piezo-ceramic chip oscillation frequency: 40.1 ± 0. The instruction manual contains experimental configurations, principles, step-by-step instructions, and examples of experiment results. Please click Experiment Theory and Contents to find more information about this apparatus.įrequency range: 38 ~ 42 kHz resolution: 1 Hz Observe and measure double-slit interference and single-slit diffraction of sound wave Study the interference of reflected and original sound wave, i.e. ![]() ![]() Measure sound speed in air using phase and resonance interference methodsģ. Using this apparatus, the following experiments can be conducted:Ģ. A reflective plate to conduct interference experiment between reflected wave and original wave Ultrasonic receiver in connection to a rotating device to measure rotational anglesģ. An ultrasonic sensor with strong anti-interference capability to ensure high performance operationĢ. In the past decade, numerous reports have described. The concept of the diffraction limit put forth by Ernst Abbe and others has been an important guiding principle limiting our ability to tightly focus classical waves, such as light and sound, in the far field. This apparatus is designed with the following characteristics:ġ. The diffraction limit defined in a reasonable way still stands unbroken to this day. Through the experiments, students can have a better understanding of the fundamentals of acoustic wave and related experimental methods. This apparatus is specially designed to observe standing waves and resonance phenomenon of interference, measure the speed and wavelength of sound in air, observe double-slit interference and diffraction of sound, and observe the interference of original wave and reflected wave. The measurements of many physical parameters such as ultrasonic distance, positioning, liquid flow, elastic modulus of materials, and gas temperature transient changes, involve sound speed.
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