CN103646588A - Science popularization exhibit teaching product - Google Patents

Abstract

The invention discloses a science popularization exhibit teaching product and belongs to the scientific propaganda field. The science popularization exhibit teaching product comprises an empty chamber, a spiral line, a casing, a switch, a rotary knob, a power line, a movement body and a frequency converter; one end of the frequency converter is in series connection with the switch through a guide line; the other end of the frequency converter is connected with the spiral line through the guide line; the spiral line is arranged inside the casing; the empty chamber is arranged inside the casing; the switch and the rotary knob are arranged on a face plate of the casing. The science popularization exhibit teaching product has the advantages of solving the problems that the public scientific quality level is low and the public is urgent to popularize physical commonsense and being simple in structure, reasonable in design and easy to produce.

Description

A popular science exhibition teaching material

technical field

The invention belongs to the field of popular science publicity, and more specifically relates to a science popularization exhibition teaching material for demonstrating relevant physical knowledge.

Background technique

China has a large population, backward educational infrastructure, and a low per capita education level. The seriousness of science discourages the public, and it is imperative to popularize scientific knowledge among the public. At present, the relationship between man and nature is further deteriorating, and handling the relationship between man and nature has also been put on the agenda. Therefore, it is particularly important to create popular science works to improve the scientific quality of the public and educate the public how to deal with the relationship between man and nature. Aiming at the low level of public scientific literacy and the disharmony between man and nature, the present invention creates a popular science work that combines learning with fun, so that people can learn relevant scientific knowledge while having fun, and thus have a strong interest in science. At the same time, educate the public to be kind to nature.

Contents of the invention

Aiming at the problems that the general public's scientific literacy level is low and common knowledge of physics needs to be popularized urgently, the present invention provides a teaching material for popular science exhibition.

In order to solve the above problems, the present invention adopts the following technical solutions.

A teaching product for popular science exhibition, comprising a housing, the housing is provided with a cavity, the top surface of the housing is wound with a helix, the housing panel is provided with a switch and a knob, the cavity is placed with a moving body, and the A frequency converter is arranged in the shell panel, one end of the frequency converter is connected in series with a switch through a wire, the other end is connected with a helical wire through a wire, and the switch is connected with a power supply through a power line.

The moving body is provided with a temperature-sensitive color-changing material and a magnetic substance, and the moving body is injection-molded through a transparent material. The temperature-sensitive color-changing material in the moving body 7 is the R series temperature-sensitive material of Dongguan Tengda Printing Coatings Co., Ltd. As for the discoloration material, the magnetic substance in the moving body 7 is magnetic lead sand, and the transparent material in the moving body is transparent silica gel. The moving body is in the shape of a bunny.

Compared with the prior art, the present invention has the remarkable advantages of:

(1) The present invention combines the temperature-sensitive discoloration of materials, the Curie point of substances, the formation and change of alternating magnetic fields, the effect of alternating magnetic fields on magnets, the induction of alternating magnetic fields and ferromagnets, the force and motion of objects, etc. The knowledge points are integrated, and the profound scientific principles are explained by using widely familiar things and phenomena, which is not only simple and easy to understand, but also easier to be mastered and applied proficiently.

(2) The present invention adopts on-site demonstration, so that the educated can learn in an immersive way, achieving the effect of getting twice the result with half the effort.

(3) The present invention is simple in structure, reasonable in design and easy to manufacture.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the internal circuit of the present invention.

In the figure: 1—cavity, 2—helix, 3—housing, 4—switch, 5—knob, 6—power cord, 7—moving body, 8—inverter.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Example

As shown in Fig. 1 and Fig. 2, a science popularization teaching product of the present invention includes a cavity 1, a helix 2, a housing 3, a switch 4, a knob 5, a power cord 6, a moving body 7, and a frequency converter 8.

The housing 3 is provided with a cavity 1, the top surface of the housing 3 is wound with a helix 2, the panel of the housing 3 is provided with a switch 4 and a knob 5, the cavity 1 is placed with a moving body 7, and the A frequency converter 8 is arranged in the panel of the housing 3 , one end of the frequency converter 8 is connected in series with the switch 4 through a wire, and the other end is connected with the helix 2 through a wire, and the switch 4 is connected with a power source through a power line 6 . The moving body 7 is provided with a thermochromic material and a magnetic substance, and the moving body 7 is injection-molded by a transparent material.

The housing 3 is made into a cabin shape, and the temperature-sensitive color-changing material in the moving body 7 is selected from the R series temperature-sensitive color-changing material developed by Dongguan Tengda Printing Coatings Co., Ltd., which is in a colored state at low temperature. When the temperature is high, the pigment changes from colored to colorless, and its discoloration temperature can be set in the range of -20 to 80°C according to needs. It is green at normal temperature and red at 65°C; the moving body 7 The magnetic material in the material is magnetic lead sand, and its Curie point is 65°C. The moving body 7 is injection-molded by combining magnetic lead sand, R series temperature-sensitive color-changing materials with transparent silica gel, and made into a bunny shape.

When the alternating current is connected through the switch 4, an alternating magnetic field will be generated in the casing 3, and the magnetic lead sand will drive the moving body 7 to move in the box due to the unbalanced force in the magnetic field; turn the knob 5 to change the frequency of the alternating current , the speed and range of motion of the moving body 7 will change.

The magnetic lead sand in the moving body 7 is in a changing magnetic field, and is automatically heated due to induction. The R series thermochromic material in the moving body 7 senses the temperature change. Since it is lower than 65°C, the R series The temperature-sensitive color-changing material is displayed in green; when the temperature of the magnetic substance in the moving body 7 reaches 65°C, the magnetism of the magnetic lead sand disappears, and the moving body 7 stops moving due to the force of the magnetic field. At this time, the R series in the moving body 7 The temperature-sensitive color-changing material shows red; after a period of time, when the temperature of the magnetic lead sand in the moving body 7 is lower than 65°C, the magnetic lead sand will recover its magnetism, and the moving body 7 will start to move. At this time, the temperature-sensitive discoloration in the moving body 7 Material is shown in red.

In the present invention, it is mainly composed of a hut and bunnies in the hut. The cute little rabbits sleep in the cozy hut, giving people a warm and natural feeling, and shortening the distance between each other. Through the switch 4 and the knob 5, the bunny moves (that is, the bunny "dances"), and the speed of the bunny's "dancing" can be changed, giving the impression that the bunny is really obedient and attracts people to learn more about it; It can change color over time, and stop "dancing" after it turns red. It seems to be angry, but after a while, it changes color and immediately "dances" again. It makes people feel that this little rabbit is too naughty. At this time, the seriousness of science is greatly reduced, and the following question is why the little rabbit behaves like this, which in turn encourages people to understand the whole story, and the best effect is to promote scientific knowledge under the circumstance of extremely high thirst for knowledge.

The bunny in the present invention will stop moving after a long period of exercise and turn red, which makes people feel angry; thus, the public should be educated not to play with small animals excessively, not to use nature excessively, and to deal with people and natural relationship.

Claims (7)

1. religion product are opened up in a science popularization, comprise housing (3), it is characterized in that, in described housing (3), be provided with cavity (1), housing (3) end face is wound with helix (2), on housing (3) panel, be provided with switch (4) and knob (5), described cavity (1) is placed with movable body (7), in described housing (3) panel, be provided with frequency converter (8), connect with switch (4) by wire in described frequency converter (8) one end, the other end is connected with helix (2) by wire, and described switch (4) is connected with power supply by power lead (6).

2. science popularization exhibition religion product according to claim 1, is characterized in that, described movable body is provided with temperature-sensing color-changing material and magnetisable material in (7).

3. science popularization exhibition religion product according to claim 2, is characterized in that, described movable body (7) is by transparent material injection mo(u)lding.

4. science popularization according to claim 2 exhibition religion product, is characterized in that, the temperature-sensing color-changing material in described movable body (7) is the rise R series temperature-sensing color-changing material of printing coating company of Dongguan.

5. science popularization exhibition religion product according to claim 2, is characterized in that, the magnetisable material in described movable body (7) is the plumbous sand of magnetic.

6. science popularization exhibition religion product according to claim 3, is characterized in that, the transparent material in described movable body (7) is transparent silica gel.

7. science popularization exhibition religion product according to claim 3, is characterized in that, described movable body (7) is rabbit shape.

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