Novel Doppler experimental teaching demonstration device

Abstract

The invention discloses a new type of Doppler experiment teaching demonstration device, which comprises a water tank, a slide rail, a slider and a vibrating motor. The two opposite sides of the inner wall of the upper end of the water tank are bonded with connection platforms, and the connection platforms are arranged between There are parallel slide rails on which sliders are slidably installed, the vibration motor is fixedly installed on the base, a speed control switch is installed directly above the vibration motor, and one side of the speed control switch is fixed There is a battery installation slot, a speed control knob is arranged above the speed control switch, protruding card slots are provided on both sides of the bottom of the slider, a small roller is installed on the inner upper end of the card slot, and the slider The block and the slide rail are slidably connected by small rollers, and a vertically downward vibrator is installed at the bottom of the slide rail. The invention has simple structure, intuitive and obvious effect, simple operation and is convenient for students to understand the Doppler effect.

Description

technical field [0001] The invention relates to the technical field of physics teaching, in particular to a novel Doppler experiment teaching demonstration device. Background technique [0002] The Doppler effect states that waves receive higher frequency as the source of the wave moves toward the observer and lower frequency as the source moves away from the observer. The Doppler effect is widely used in scientific research, engineering technology, traffic management, medical diagnosis, measurement technology, etc. Monitoring; medical ultrasound is based on the principle of the Doppler effect for the detection of human visceral activity and blood flow velocity. The Doppler effect is an important content in university physics teaching. The existing university experiments have complicated instrument structures, and the phenomenon of Doppler effect cannot be seen intuitively. They are all calculated and deduced through the analysis of experimental data and principles. At the...

AI Technical Summary

Problems solved by technology

The Doppler effect is an important content in university physics teaching. The existing university experiments have complicated instrument structures, and the phenomenon of Doppler effect cannot be seen intuitively. They are all calculated and deduced through the analysis of experimental data and principles. At the same time, the accuracy of the experiment has a great relationship with the experimental equipment, which is not conducive to students' intuitive understanding of the Doppler effect. Therefore, it is necessary to provide a new type of Doppler experiment teaching demonstration device. The effect is intuitive and clear, which greatly deepens students' understanding of the Doppler effect. Our understanding of the Doppler effect

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