Rotary liquid comprehensive experimental instrument and experimental method

A technology of experimental instruments and liquids, applied in instruments, scientific instruments, measuring gravitational fields, etc., can solve problems such as efficiency reduction, measurement, and learning time waste

Inactive Publication Date: 2007-01-03
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The existing gravitational acceleration measuring instrument and viscosity coefficient measuring instrument are two independent experimental devices used in experimental teaching. The experimental content and measured physical quantities of the two are not many. As an independent experiment, students only need half of the experimental equipment. The experiment can be completed in less time, which will cause a waste of learning time and a decrease in efficiency
If these two instruments are not available in the teaching, the measurement of the acceleration of gravity and the coefficient of viscosity cannot be carried out

Method used

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  • Rotary liquid comprehensive experimental instrument and experimental method
  • Rotary liquid comprehensive experimental instrument and experimental method
  • Rotary liquid comprehensive experimental instrument and experimental method

Examples

Experimental program
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Effect test

Embodiment 1

[0073] Experimental device of the present invention sees figure 1 : It consists of a rotating mechanism, a speed control and adjustment module, a speed measurement and display module, a laser and a measurement component. The rotating mechanism is placed in the casing 6, and the turntable 11 on the upper end surface of the casing 6 is fixed on the motor bearing, which can follow the motor to rotate smoothly. The cabinet panel is provided with a speed regulating switch 10, a forward and reverse toggle switch 9, a speed digital display 10, and a laser power supply. A supporting rod 1 with a scale is vertically fixed on the instrument box 6, and the fixed position and direction of the supporting rod 1 are adjustable for different experimental content. The components include: a laser 2, a millimeter scale horizontal screen 3, and a horizontal marking line 4. Horizontal protractor 13, millimeter scale vertical screen 14, wire tension suspension cylinder 15, tension wire 16; cylind...

Embodiment 2

[0076] The acceleration of gravity g is measured by the height difference between the highest and lowest point of the rotating liquid surface, and the experimental steps are as follows:

[0077] See attached Figure 5 , the cylindrical experimental container 12 that is filled with liquid rotates at a certain speed through the speed control switch 9, and the surface of the liquid contained in it forms a paraboloid, and the speed is displayed by digital numbers 10;

[0078] Change the rotational speed n (rotation / second) of the experimental container (ω=2πn), align the bottom and the highest point of the parabolic surface of the rotating liquid with the horizontal marking line 4, and read the highest and lowest liquid level on the support rod 1 with scale Calculate the height difference Δh, measure the diameter D of the experimental container with a vernier caliper, according to the formula g = π 2 ...

Embodiment 3

[0081] Use the slope method to measure the acceleration of gravity g, see the attached Image 6 . Place the millimeter-scale horizontal screen 3 above the cylindrical experimental container 12 filled with liquid, the laser beam of the laser 2 is incident parallel to the rotating axis, passes through the millimeter-scale horizontal screen 3, and aligns with the bottom of the container 12 x 0 = mark at R /  place, measure the distance H from the transparent screen 3 to the bottom of the container 12, and the height h when the liquid level is still;

[0082] The speed control switch 9 changes the cylindrical experimental container 12 rotating speeds n (rev / min) ( ω = 2 πn 60 ) , Read the distance d between the incident light and the reflected light point BC on the millimeter scale horizontal screen 3, then tan ...

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Abstract

One rotate liquid integrated experimental instrument relates to running framework, speed controlling and adjusted module, speed measuring and display module, laser and measure part. Running framework is inside of the box and the disk on the top of the box fixed with bearing of electrical machinery moves with it; the box plate owns timing switch, positive and negative turning dialing switch, speed number display and laser electrical source. There are two vertical support poles with scales which measures and fixes measuring parts of the different experiment content and adjusts the position and direction. The rotate liquid integrated physics experimental instrument is fit for acceleration of gravity, viscosity factor measure and research of optics system that combines mechanics, electricity and optics.

Description

technical field [0001] The invention relates to a physical experiment device, in particular to a rotating liquid comprehensive experiment instrument capable of quantitatively measuring gravity acceleration and liquid viscosity coefficient. Background technique [0002] The acceleration of gravity is a very important physical quantity. In the teaching of university physics experiments, the following methods and instruments for measuring the acceleration of gravity are commonly used: [0003] 1, free fall method, it is that a kind of initial velocity is zero according to free fall, and acceleration is the uniformly accelerated rectilinear motion of g, namely h = 1 2 g t 2 If an object falls to a certain height, its velocity is v 0 , then the falling height of the object within t time at this height is h = v 0 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00G01V7/00
Inventor 陈红雨
Owner ZHEJIANG UNIV
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