CN212624533U

CN212624533U - Optical refraction demonstration device for junior middle school physics teaching

Info

Publication number: CN212624533U
Application number: CN201921073740.2U
Authority: CN
Inventors: 贾立敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2021-02-26
Anticipated expiration: 2029-07-10

Abstract

The utility model relates to a teaching equipment technical field especially relates to an optics refraction presentation device for junior middle school physics teaching. The medium conversion device comprises an upper dial (1), a lower dial (3), a medium conversion rod (2), a connecting rod (4) and a supporting plate (5), and is characterized in that the upper dial (1) is fixedly connected with the lower dial (3) through a first fixing device (302), and the lower part of the lower dial (3) is connected to the supporting plate (5) through the connecting rod (4); the lower dial disc further comprises a medium conversion rod supporting plate (301), and the first fixing device (302) is used for fixedly connecting the upper dial disc, the medium conversion rod supporting plate (301) and the lower dial disc (3); the medium conversion rod supporting plate (301) is used for supporting the medium conversion rod (2). The utility model discloses not only can carry out the demonstration of the refraction experiment of the light of four kinds of media, but also conveniently carry easy operation.

Description

Optical refraction demonstration device for junior middle school physics teaching

Technical Field

The utility model relates to a teaching equipment technical field especially relates to an optics refraction presentation device for junior middle school physics teaching.

Background

The light refraction law is the basic law of geometric optics and is the main basis for explaining refraction phenomena in life, and the scientific exploration capacity of students can be well developed in the exploration process of the light refraction law. For the junior students who just touch physics, accurate understanding of the light refraction phenomenon and law can only be summarized through the induction of experimental phenomena, so that the understanding and receiving degree of the students can be directly determined if the light refraction demonstration experiment can not be successful or the experimental phenomena are obvious enough.

In the existing physical teaching in junior middle schools, water cups and chopsticks are used for demonstrating in many cases in the aspect of light refraction, and the demonstrating means is rough, so that students can not understand the reason clearly; also there is the refraction demonstration teaching aid of some light in the existing market, but the refraction demonstration teaching aid of light among the prior art is or the size is too big, is not convenient for carry, or can only carry out the refraction experiment of the light of a medium.

To this end, we propose an optical refraction demonstration device for physical teaching in junior middle schools to solve the above problems

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an optical refraction demonstration device for junior middle school physics teaching.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the optical refraction demonstration device for junior middle school physics teaching comprises an upper dial, a lower dial, a medium conversion rod, a connecting rod and a supporting plate, and is characterized in that the upper dial is fixedly connected with the lower dial through a first fixing device, and the lower part of the lower dial is connected to the supporting plate through the connecting rod; the lower dial further comprises a medium conversion rod supporting plate, and the first fixing device further fixedly connects the upper dial, the medium conversion rod supporting plate and the lower dial; the medium conversion rod supporting plate is used for supporting the medium conversion rod.

Further, the media conversion bar comprises a rotating bar, a media fixing bar, a first medium, a second medium, a third medium and a fourth medium; wherein the medium fixing rod is a cuboid rod-shaped solid; the rotating rod is fixed on the bottom surface of the medium fixing rod, and the first medium, the second medium, the third medium and the fourth medium are fixedly adhered to four side surfaces of the medium fixing rod.

Further, the first medium is a glass brick, the second medium is a thick glass brick filled with water, the third medium is a concave lens, and the fourth medium is a convex lens.

Further, the lower dial further includes a first supporting means and a second supporting means.

Further, the connecting rod is detachable.

Compared with the prior art, the utility model, its beneficial effect does:

1. by arranging the medium conversion rod and the medium conversion rod supporting plate, the light refraction experiment demonstration of four different media can be realized, and students can feel the relevant physical knowledge of light refraction more intuitively;

2. the medium that will four kinds of differences sets up on a rotatable medium conversion stick, only needs to rotate this medium conversion stick just can accomplish the conversion of the medium that carries out the refraction experiment of light, and not only the operation of being convenient for has retrencied the device moreover, portable.

Drawings

Fig. 1 is a schematic front structural view of an optical refraction demonstration apparatus for junior middle school physics teaching according to the present invention;

FIG. 2 is a schematic structural diagram of a medium-converting rod of the optical refraction demonstration apparatus for junior middle school physics teaching of the present invention;

fig. 3 is the utility model provides an optical refraction presentation device's positive structural schematic for junior middle school physics teaching.

In the figure: 1 upper dial, 2 medium conversion rod, 3 lower dial, 4 connecting rod, 5 supporting plate, 201 rotating rod, 202 first medium, 203 medium fixing rod, 204 second medium, 301 medium conversion rod supporting plate, 302 first fixing device, 303 first supporting device, 304 second supporting device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the optical refraction demonstration apparatus for junior middle school physics teaching comprises an upper dial 1, a lower dial 3, a medium conversion rod 2, a connecting rod 4 and a support plate 5, and is characterized in that the upper dial 1 is fixedly connected with the lower dial 3 through a first fixing device 302, and the lower part of the lower dial 3 is connected to the support plate 5 through the connecting rod 4; the lower dial plate further comprises a medium conversion rod supporting plate 301, and the first fixing device 302 is used for fixedly connecting the upper dial plate, the medium conversion rod supporting plate 301 and the lower dial plate 3; the media conversion rod support plate 301 serves to support the media conversion rod 2.

It should be noted that, when the refraction demonstration experiment of light is carried out, the optical refraction demonstration device for junior high school physics teaching is assembled, the medium conversion rod 2 is placed on the medium conversion supporting plate 301, a laser pen emits a laser beam on the lower dial 3, the laser beam passes through the medium and then is emitted by the upper dial 1, the refraction angle of the light under the medium is shown to students, and meanwhile, the students are led to observe the deflection angle of the recorded light.

The medium conversion rod 2 includes a rotating rod 201, a medium fixing rod 203, a first medium 202, a second medium 204, a third medium, and a fourth medium; wherein the medium fixing rod 203 is a cuboid rod-shaped solid; the rotating rod 201 is fixed on the ground of the medium fixing rod 203, and the first medium 202, the second medium 204, the third medium and the fourth medium are fixedly adhered to four side surfaces of the medium fixing rod; the first medium 202 is a glass brick, the second medium 204 is a thick glass brick filled with water, the third medium is a concave lens, and the fourth medium is a convex lens.

It should be noted that, when the medium conversion is performed during the demonstration using the optical refraction demonstration apparatus for physical teaching in junior middle schools, the medium conversion rod 2 is moved backward, the medium conversion rod 2 is taken out, the rotating rod 201 is rotated to the target medium, the medium conversion rod 2 is placed on the medium conversion rod support plate 301, the medium conversion rod 2 is pushed outward, and the medium protrudes between the upper scale and the lower scale, so that the light refraction demonstration experiment is performed.

The lower dial 3 further comprises a first support means 303 and a second support means 304; the first supporting device 303 and the second supporting device 304 are fixedly connected between the upper scale 1 and the lower scale 3, and are used for supporting the upper scale 1.

The connecting rod 4 is detachable; the body of rod that connecting rod 4 and backup pad 5 are connected is provided with the spiral line, and backup pad 5 corresponds inside being provided with the spiral line that matches with it in the position, and when finishing using, rotatory bracing piece 4 or backup pad 5 make the device decompose into two parts, conveniently carry.

The using method comprises the following steps: when light refraction demonstration experiments are carried out, the connecting rod 4 and the supporting plates 5 are connected together, and the optical refraction demonstration device for junior middle school physics teaching is assembled; placing the medium conversion rod 2 on the medium conversion supporting plate 301, emitting a laser beam on the lower dial 3 by using a laser pen, displaying the refraction angle of the medium to students, recording the incident angle alpha, emitting the medium from the upper dial 1 after passing through the medium, recording the emission angle beta, obtaining the refractive index data of the medium, converting the incident angle for many times, and recording corresponding experimental data; after the experiment of one medium is completed, the conversion rod 2 is rotated, and the above process is repeated to obtain other experimental data.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The optical refraction demonstration device for junior middle school physics teaching comprises an upper dial (1), a lower dial (3), a medium conversion rod (2), a connecting rod (4) and a supporting plate (5), and is characterized in that the upper dial (1) is fixedly connected with the lower dial (3) through a first fixing device (302), and the lower part of the lower dial (3) is connected onto the supporting plate (5) through the connecting rod (4); the lower dial disc further comprises a medium conversion rod supporting plate (301), and the first fixing device (302) is used for fixedly connecting the upper dial disc, the medium conversion rod supporting plate (301) and the lower dial disc (3); the medium conversion rod supporting plate (301) is used for supporting the medium conversion rod (2).

2. Optical refraction demonstration apparatus for teaching physics in junior middle school according to claim 1 characterized in that said medium conversion stick (2) comprises a rotating stick (201), a medium fixed stick (203), a first medium (202), a second medium (204), a third medium and a fourth medium; wherein the medium fixing rod (203) is a cuboid rod-shaped solid; the rotating rod (201) is fixed on the bottom surface of the medium fixing rod (203), and the first medium (202), the second medium (204), the third medium and the fourth medium are fixedly adhered to four side surfaces of the medium fixing rod.

3. The optical refraction demonstrating device for junior middle school physics teaching according to claim 2, wherein the first medium (202) is a glass brick, the second medium (204) is a thick glass brick with water inside, the third medium is a concave lens, and the fourth medium is a convex lens.

4. Optical refraction demonstration apparatus for teaching physics in junior middle school according to claim 1 characterized in that said lower scale (3) further comprises first (303) and second (304) supporting means.

5. Optical refraction demonstration apparatus for teaching physics in junior middle school according to claim 1 characterized in that the connecting rod (4) is detachable.