Mechanical wave fluctuation experiment and teaching demonstrator

A technology of mechanical waves and demonstrators, applied in teaching models, instruments, educational appliances, etc., can solve problems such as single means and methods, and achieve the effect of convenient use and simple structure

Pending Publication Date: 2018-11-13
NANJING POLYTECHNIC INSITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the means and methods of classroom teaching and experimental teaching of fluctuating content are still relatively simple, and there is no experimental device that can integrate qualitative demonstration in classroom, quantitative measurement of experiment, and theoretical analysis of experimental phenomena. It is a

Method used

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  • Mechanical wave fluctuation experiment and teaching demonstrator
  • Mechanical wave fluctuation experiment and teaching demonstrator
  • Mechanical wave fluctuation experiment and teaching demonstrator

Examples

Experimental program
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Embodiment Construction

[0017] exist figure 1 Among them, the sliding ball 17 is worn on the sliding rod 16, the small screw rod 18 is screwed on the sliding ball 17, the sliding rod 16 is fixed on the bow mouth of the bow-shaped bracket 20, and the bow-shaped bracket 20 is fixed upright on the panel at the right end of the base 30, On the left side of the base 30, a sufficiently long positioning slot 23 is excavated from top to bottom. The bow bracket 20 and the positioning slot 23 are distributed along the longitudinal axis of the base 30. The scale plate 1 is fixed upright on the base 30, and is located on the bow bracket 20, At the back of the adjusting groove 23, the bottom plate 26 is above the adjusting groove 23, and the gasket 27 is below the adjusting groove 23, and two bolts 29 pass through the gasket 27, the adjusting groove 23, and the bottom of the base 30 from bottom to top. The jacks 31 at both ends of the base plate 26 are screwed with the butterfly nuts 2, the base plate 26 is tight...

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PUM

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Abstract

A mechanical wave fluctuation experiment and teaching demonstrator comprises a scale plate, a digital display, a dotting timer, a circuit board, a fixed part, a number reading hanging rod, an elasticstrip, a support bench, a slide bar, a sliding ball, an arc support, a positioning groove, a similarly T shaped transparent number reading identification groove box, a power switch, a Zener diode, first and second triodes, first to third resistors, a variable capacitor and a variable resistor. An RC oscillator and the Zener diode form an adjustable low frequency oscillation circuit, output of theadjustable low frequency oscillation circuit supplies power to the timing dotting timer, the digital display displays concrete frequency in real time, and the tail end of a vibration sheet of the dotting timer is connected with the sliding ball which sleeves the slide bar via the elastic strip. The mechanical wave fluctuation experiment and teaching demonstrator can demonstrate fluctuation characteristic and standing wave formation condition, measure the wavelength and wave velocity quantitatively, and discuss influence of the interactive intensity between an elastic medium property and mass unit on the wave velocity.

Description

technical field [0001] The invention relates to a mechanical wave fluctuation experiment and teaching demonstration instrument, in particular to a device that can not only demonstrate the characteristics of fluctuations and the formation conditions of standing waves, but also quantitatively measure the wavelength and wave speed, and discuss the effects of elastic medium properties and interaction strength between mass elements on wave speed. influences. Background technique [0002] At present, the means and methods of classroom teaching and experimental teaching of fluctuating content are still relatively simple, and there is no experimental device that can integrate qualitative demonstration in classroom, quantitative measurement of experiment, and theoretical analysis of experimental phenomena. It is a mechanical wave fluctuation experiment and teaching demonstration instrument that demonstrates wave characteristics and standing wave formation conditions, and can quantita...

Claims

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Application Information

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IPC IPC(8): G09B23/06
CPCG09B23/06
Inventor 郝杰
Owner NANJING POLYTECHNIC INSITUTE
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