Electrostatic field line demonstration instrument

Abstract

The utility model discloses an electrostatic field line demonstration instrument, which comprises at least one demonstration device and an electrostatic field generating part, the demonstration device comprises a box body and a plurality of demonstration objects, and the demonstration objects are distributed in the box body and are suitable for freely rotating in the box body; the electrostatic field generation component is suitable for generating an electrostatic field; wherein the demonstration object is suitable for being polarized by an electrostatic field generated by the electrostatic field generation component, so that the demonstration object rotates under the action of the electrostatic field. According to the invention, the abstract phenomenon of the electrostatic field can be visualized through visual real object demonstration.

Description

Technical Field

[0001] The utility model relates to an electrostatic field line demonstrator, belonging to the technical field of teaching experimental equipment. Background Art

[0002] In physics teaching, electrostatic field is an important concept, which describes the force and movement law of electric charge in the electrostatic field. However, the electrostatic field is an invisible and intangible physical phenomenon, which makes it difficult for students to understand and master it intuitively. After searching, it was found that the Chinese patent with the announcement number CN2569270Y disclosed a multifunctional electrostatic field demonstrator. In this patent, a battery and a DC step-up transformer are connected to provide DC high voltage electricity to the device, and a metal ball or electrode plate is placed in a transparent plastic container and connected to the outer wall of the container through an open wire nose. When the metal ball or electrode plate induces an electrostatic field, the shape and distribution of the electrostatic field in the transparent plastic container will change. However, the patent is complicated to operate when testing the force between different charges, which is not easy for some students to operate and observe. Summary of the invention

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide an electrostatic field line demonstrator which can visualize the abstract phenomenon of electrostatic field through intuitive physical demonstration.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: an electrostatic field line demonstrator, comprising:

[0005] At least one demonstration device, the demonstration device comprising a box and a plurality of demonstration objects, the demonstration objects are distributed in the box and are suitable for freely rotating in the box;

[0006] an electrostatic field generating component, wherein the electrostatic field generating component is suitable for generating an electrostatic field; wherein,

[0007] The demonstration object is suitable for being polarized by the electrostatic field generated by the electrostatic field generating component, so as to rotate under the action of the electrostatic field.

[0008] Furthermore, in order to facilitate the rotation of the demonstration object, the demonstration object is connected to the box through a rotation mechanism, and the rotation mechanism includes:

[0009] A base, the base being fixedly connected to the box;

[0010] A movable rod, the lower end of which is rotatably connected to the base, and the middle part of the demonstration object is connected to the upper end of the movable rod.

[0011] Furthermore, the demonstrator is made of calcium copper titanate.

[0012] Furthermore, the dielectric constant of the demonstrator is 104-105, and the dielectric loss is 0.03.

[0013] Furthermore, two ends of the demonstration object form electric dipoles.

[0014] Furthermore, for easy observation, the box is made of a transparent material.

[0015] Furthermore, the electrostatic field generating component includes a positive power supply electrode and a negative power supply electrode.

[0016] Furthermore, the demonstration device is provided in plurality, and the plurality of demonstration devices are evenly distributed around a circle with the electrostatic field generating component as the center.

[0017] Furthermore, the electrostatic field generating component is a parallel plate capacitor.

[0018] After adopting the above technical solution, the utility model has the following beneficial effects:

[0019] 1. In the present invention, an electrostatic field generating component is placed close to a demonstration device, and the positive and negative electrodes of the power supply in the electrostatic field generating component generate an electrostatic field. The electrostatic field acts on a demonstration object in the box, causing the demonstration object to be polarized to form an electric dipole, and positive and negative charges are formed at both ends of the demonstration object. Under the action of the electrostatic field, the demonstration object rotates, and multiple demonstration objects rotate, thereby generating visible electrostatic field lines.

[0020] 2. In the present invention, the box body is made of transparent material, which makes it easy to observe the rotation of the demonstration object. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 3 It is a structural schematic diagram of the demonstration object and the rotating mechanism of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0025] Figure 5 This is a schematic structural diagram of the third embodiment of the present utility model. DETAILED DESCRIPTION

[0026] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0027] Embodiment 1

[0028] Specifically, Figure 1-3 As shown, an electrostatic field line demonstrator comprises:

[0029] A demonstration device, comprising a box 1 and a plurality of demonstration objects 2, wherein the demonstration objects 2 are distributed in the box 1 and are suitable for freely rotating in the box 1;

[0030] An electrostatic field generating component, the electrostatic field generating component is suitable for generating an electrostatic field; wherein,

[0031] The demonstration object 2 is suitable for being polarized by the electrostatic field generated by the electrostatic field generating component, so as to rotate under the action of the electrostatic field.

[0032] In this embodiment, 256 demonstration objects 2 are arranged in the box 1, and the 256 demonstration objects 2 are evenly arranged in 16 rows and 16 columns in the box 1, and there is enough space for rotation. In the initial state, the 256 demonstration objects 2 are in different directions.

[0033] Specifically, Figure 3 As shown, the demonstration object 2 is connected to the box 1 through a rotating mechanism, and the rotating mechanism includes:

[0034] A base 6, which is fixedly connected to the box body 1;

[0035] The movable rod 7 has a lower end rotatably connected to the base 6 , and the middle part of the demonstration object 2 is connected to the upper end of the movable rod 7 .

[0036] Specifically, Demonstration Object 2 is made of calcium copper titanate.

[0037] Specifically, the dielectric constant of Demonstration 2 is 104-105, and the dielectric loss is 0.03.

[0038] Specifically, two ends of the demonstrator 2 form electric dipoles.

[0039] In this embodiment, the demonstrator 2 is polarized into many small electric dipoles under the action of the electrostatic field due to its high dielectric constant of 105. The electric dipoles have positive and negative charges. Due to the characteristic that negative charges point to positive charges, they rotate under the action of the electric field under the influence of torque.

[0040] Specifically, the box 1 is made of a transparent material. In this embodiment, the box 1 can be a transparent acrylic plate, which can well protect the demonstration object 2 and allow other personnel to intuitively observe the changes of the demonstration object 2 under the influence of the electrostatic field.

[0041] Specifically, Figure 1-3 As shown, the electrostatic field generating component includes a positive power supply electrode 3 and a negative power supply electrode 4.

[0042] In this embodiment, the electrostatic field generating component is close to the demonstration device, and the positive electrode 3 and the negative electrode 4 of the power supply in the electrostatic field generating component generate an electrostatic field. The electrostatic field acts on the demonstration object 2 in the box 1, so that the demonstration object 2 is polarized to form an electric dipole, and positive and negative charges are formed at both ends of the demonstration object 2; under the action of the electrostatic field, the demonstration object 2 will rotate, and multiple demonstration objects 2 will rotate, thereby generating visible electrostatic field lines.

[0043] Embodiment 2

[0044] The structure of the electrostatic field line demonstrator of this embodiment is basically the same as that of the first embodiment, except that: Figure 4 As shown, there are multiple demonstration devices, and the multiple demonstration devices are evenly distributed around a circle with the electrostatic field generating component as the center.

[0045] In this embodiment, a total of six demonstration devices are provided, and an electrostatic generating component is placed in the middle of the six demonstration devices. An electrostatic field is generated by the positive pole 3 and the negative pole 4 of the power supply in the electrostatic generating component, so that the demonstration objects 2 in the six demonstration devices are polarized by the electrostatic field, thereby causing multiple demonstration objects 2 to rotate, demonstrating the shape of the spatial electrostatic field.

[0046] Embodiment 3

[0047] The structure of the electrostatic field line demonstrator of this embodiment is basically the same as that of the first embodiment, except that: Figure 5 As shown,

[0048] The electrostatic field generating component is a parallel plate capacitor 5 .

[0049] In this embodiment, a parallel plate capacitor can be placed next to the box 1. Since one plate of the parallel plate capacitor carries the positive pole of the power supply and the other plate carries the negative pole 4 of the power supply, an electrostatic field is generated, so that the demonstration objects 2 in the demonstration device are polarized by the electrostatic field, thereby causing multiple demonstration objects 2 to rotate, demonstrating the shape of the electrostatic field under the electric field of the parallel plate capacitor.

[0050] The above specific embodiments further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrostatic field line demonstrator, characterized in that: include: At least one demonstration device, the demonstration device comprising a box (1) and a plurality of demonstration objects (2), the demonstration objects (2) being distributed in the box (1) and suitable for freely rotating in the box (1); an electrostatic field generating component, wherein the electrostatic field generating component is suitable for generating an electrostatic field; wherein, The demonstration object (2) is suitable for being polarized by the electrostatic field generated by the electrostatic field generating component, so as to rotate under the action of the electrostatic field.

2. The electrostatic field line demonstrator according to claim 1, characterized in that: The demonstration object (2) is connected to the box (1) via a rotating mechanism, and the rotating mechanism comprises: A base (6), the base (6) being fixedly connected inside the box (1); A movable rod (7), the lower end of which is rotatably connected to the base (6), and the middle part of the demonstration object (2) is connected to the upper end of the movable rod (7).

3. The electrostatic field line demonstrator according to claim 1, characterized in that: The demonstrator (2) is made of calcium copper titanate.

4. The electrostatic field line demonstrator according to claim 1, characterized in that: The dielectric constant of the demonstrator (2) is 104-105, and the dielectric loss is 0.

03.

5. The electrostatic field line demonstrator according to claim 1, characterized in that: The two ends of the demonstration object (2) form electric dipoles.

6. The electrostatic field line demonstrator according to claim 1, characterized in that: The box body (1) is made of a transparent material.

7. The electrostatic field line demonstrator according to claim 1, characterized in that: The electrostatic field generating component comprises a positive power supply electrode (3) and a negative power supply electrode (4).

8. The electrostatic field line demonstrator according to claim 7, characterized in that: There are multiple demonstration devices, and the multiple demonstration devices are evenly distributed around the circumference with the electrostatic field generating component as the center.

9. The electrostatic field line demonstrator according to claim 1, characterized in that: The electrostatic field generating component is a parallel plate capacitor (5).

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