Experiment 39: String standing wave 1 Experimental purpose Observe the standing wave phenomenon formed on strings and rings, study the conditions and rules for the generation of standing waves, and understand the normality of string vibration. Patterns and sound patterns of stringed instruments. 2. Experimental device The experimental device is shown in Figure 39-1, including an electric oscillator, a vibration source, a string (circular elastic band), and a steel wire ring. root. The vibration signal is generated by the electric oscillator and output to the vibration source in the vibration source box. The vibration source is modified from a speaker and connected to A vibrating rod, the vibration source drives the vibrating rod to vibrate up and down. The vibration frequency and amplitude of the vibrating rod can be determined by the electric oscillator The frequency adjustment knob and power adjustment knob control and adjust. The vibrating rod can drive the string or steel wire...
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