CN111899613B - Hertz experiment demonstration device - Google Patents
Hertz experiment demonstration device Download PDFInfo
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- CN111899613B CN111899613B CN202010679423.6A CN202010679423A CN111899613B CN 111899613 B CN111899613 B CN 111899613B CN 202010679423 A CN202010679423 A CN 202010679423A CN 111899613 B CN111899613 B CN 111899613B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/181—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for electric and magnetic fields; for voltages; for currents
Abstract
The invention belongs to the technical field of electromagnetic wave generation and electromagnetic induction, and particularly provides a Hertz experiment demonstration device which is used as a demonstration instrument of a museum or a science and technology museum. The invention comprises the following steps: demonstration platform 1, experimental apparatus 2 and darkroom 3, experimental apparatus set up on the demonstration platform, and the darkroom is arranged in to the demonstration platform, and experimental apparatus includes: neon tube 21, electromagnetic wave receiving device 23, electromagnetic wave generating device 24 and control knob 26 of the direct current power supply; in the demonstration process, a participant controls an electromagnetic wave emitting device to generate electromagnetic waves by adjusting a direct-current power supply control knob, the electromagnetic waves are transmitted in the air, and when a receiving device receives the electromagnetic waves, induced currents are generated, so that a neon tube is lightened to flicker at the same frequency; the generation of electromagnetic waves, the propagation of the electromagnetic waves from a transmitting end to a receiving end and the reception of the electromagnetic waves are demonstrated, thereby proving the existence of the electromagnetic waves. In conclusion, the invention can intuitively and clearly show the generation, transmission and reception phenomena of the electromagnetic wave.
Description
Technical Field
The invention belongs to the technical field of electromagnetic wave generation and electromagnetic induction, and particularly relates to a Hertz experiment demonstration device and a demonstration method.
Background
Most of the existing Hertz experiment demonstration devices are classroom teaching aids, are simple and are not visual enough, and the aim of popular science of people with different knowledge backgrounds is difficult to achieve; and the interactive experience equipment for museums or science and technology museums needs to be simple and easy to understand, has obvious phenomenon, can explain scientific principles through interesting phenomenon, simultaneously keeps interactive characteristic, and strengthens people's participation. Based on the demonstration device and the demonstration method, the Hertz experiment demonstration device and the demonstration method are used as demonstration instruments of museums or science and technology museums to show the phenomena of generation, transmission and reception of electromagnetic waves to the public.
Disclosure of Invention
The invention aims to provide a Hertz experiment demonstration device which is used as a demonstration instrument of a museum or a science and technology museum.
In order to achieve the purpose, the invention adopts the technical scheme that:
hertz's experiment presentation device includes: the device comprises a demonstration table 1, an experimental device 2 and a darkroom 3, wherein the experimental device 2 is arranged on the demonstration table 1, and the demonstration table 1 is arranged in the darkroom 3;
the experimental apparatus 2 includes: neon tube 21, neon tube support 22, electromagnetic wave receiving device 23, electromagnetic wave generating device 24 and control knob 26 of the direct current power; wherein, the first and the second end of the pipe are connected with each other,
the neon tube 21 is fixed on the demonstration table through a neon tube bracket 22;
the electromagnetic wave generating device 24 includes: two large launching copper balls 241 and 242, two copper rods 243 and 244, two small launching copper balls 246 and 247, a copper rod bracket 248, a high-voltage induction coil 245 and a lead; one end of each copper rod is welded with a small launching copper ball, the other end of each copper rod is welded with a large launching copper ball, the two copper rods are respectively fixed on the demonstration table through copper rod brackets and are positioned on the same straight line, so that the two small launching copper balls are oppositely arranged, and an air gap is formed between the two small launching copper balls; the two copper rods are respectively connected with the positive electrode and the negative electrode of the high-voltage induction coil through leads;
the electromagnetic wave receiving device 23 is located on the same plane as the electromagnetic wave generating device 24, and includes: a copper wire frame 231, a wire frame bracket 232, two receiving copper balls 233, 234 and a lead; the copper wire frame is provided with an opening, the two copper receiving balls are respectively fixed at the open end of the copper wire frame, and the copper receiving balls and the small launching copper balls are arranged in a one-to-one correspondence manner; the copper wire frame is fixed on the demonstration table through a wire frame bracket and is connected with the neon tube through a lead;
the direct-current power supply control knob 26 is arranged on the demonstration table and used for adjusting the size of a direct-current power supply of the high-voltage induction coil.
Further, the experimental device 2 further comprises an openable glass door 25, and the openable glass door is placed between the electromagnetic wave receiving device and the electromagnetic wave emitting device, and is used as a safety measure for ensuring the safety of participants.
Furthermore, the darkroom 3 is composed of a darkroom main body 32 and an openable and closable window shade 31 arranged on one side of the darkroom main body 32, and the openable and closable window shade is used for shading light and adjusting the ambient brightness of the darkroom, so that the phenomenon is obvious.
Further, the copper wire frame 231 has a circular or rectangular shape.
The invention has the beneficial effects that:
the invention provides a Hertz experiment demonstration device, wherein in the demonstration process, a participant adjusts the voltage of a high-voltage coil in an electromagnetic wave generating device by adjusting a direct-current power supply control knob, and when the voltage is increased to the point that air is punctured, current passes through an air gap repeatedly to generate bright electric sparks, namely, an electromagnetic wave emitting device generates electromagnetic waves; electromagnetic waves are propagated in the air, when the receiving device receives the electromagnetic waves, induced currents are generated in the copper wire frame, and the induced currents are transmitted through the lead, so that the neon tube is lightened to flash at the same frequency; the generation of electromagnetic waves, the propagation of the electromagnetic waves from a transmitting end to a receiving end and the reception of the electromagnetic waves are demonstrated, thereby proving the existence of the electromagnetic waves.
In conclusion, the electromagnetic wave demonstration instrument is used as a demonstration instrument of a museum or a science and technology museum, and can intuitively and clearly show the generation, transmission and reception phenomena of the electromagnetic wave.
Drawings
FIG. 1 is a schematic top view of the structure of the Hertz experiment demonstration device of the invention.
FIG. 2 is a left side view of the Hertz experiment demonstration apparatus of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The embodiment provides a hertzian experiment demonstration device, the structural schematic diagram of which is shown in fig. 1 and fig. 2, including: the device comprises a demonstration table 1, an experimental device 2 and a darkroom 3, wherein the demonstration table 1 and the experimental device 2 are both arranged in the darkroom 3, and the experimental device 2 is arranged on the demonstration table 1; the darkroom 3 comprises a darkroom main body 32 and an openable and closable window shade 31 arranged on one side surface of the darkroom main body 32, wherein the openable and closable window shade 31 is used for shading light rays to make the phenomenon obvious, and the whole darkroom is as large as one room;
the experimental apparatus 2 includes: neon tube 21, neon tube support 22, electromagnetic wave receiving device 23, electromagnetic wave generating device 24, openable glass door 25 and control knob 26 of the direct current power; wherein, the first and the second end of the pipe are connected with each other,
the neon tube 21 is fixed on the demonstration table 1 through a neon tube bracket 22; in this embodiment, the neon tube support 22 is fixed on the demonstration table through the box body 221;
the electromagnetic wave receiving device 23 includes: a copper wire frame 231, a wire frame support 232, two receiving copper balls 233, 234 and a lead; the copper wire frame 231 is fixed on the demonstration table through a wire frame bracket 232, the copper wire frame 231 is provided with an opening, the copper receiving balls 233 and 234 are fixed at two ends (namely two open ends at the opening) of the copper wire frame 231 through welding respectively, and the copper wire frame is connected with the neon tube 21 through a lead; in this embodiment, the copper wire frame 231 is a rectangle with a length of 68cm and a width of 64cm, an opening of the copper wire frame 231 is located at a middle position adjacent to a side of the electromagnetic wave generating device 24, the diameters of the receiving copper balls 233 and 234 are both 1.5cm, and the distance between the two copper balls is 10 cm;
the electromagnetic wave generating device 24 includes: two large transmitting copper balls 241 and 242, two copper rods 243 and 244, two small transmitting copper balls 246 and 247, a copper rod bracket 248, a high-voltage induction coil 245 and a conducting wire; one end of the copper rod 243 is welded with the small transmitting copper ball 246, the other end of the copper rod is welded with the large transmitting copper ball 241, one end of the copper rod 244 is welded with the small transmitting copper ball 247, the other end of the copper rod is welded with the large transmitting copper ball 242, and the copper rods 243 and 244 are respectively connected with the positive electrode and the negative electrode of the high-voltage induction coil 245 through leads; the copper rods 243 and 244 are respectively fixed on the demonstration table 1 through a copper rod bracket 248 and are positioned on the same straight line (parallel to the copper wire frame 231 with the opened edge), so that the two small launching copper balls 246 and 247 are oppositely arranged and air gaps are reserved; in this embodiment, the diameters of the two large transmitting copper balls 241 and 242 are both 20cm, the diameters of the two small transmitting copper balls 246 and 247 are both 1.5cm, the distance between the small transmitting copper balls 246 and 247 is 10cm, the small transmitting copper ball 246 and the receiving copper ball 233 are arranged correspondingly (i.e., on the same straight line), and the small transmitting copper ball 247 and the receiving copper ball 234 are arranged correspondingly;
the electromagnetic wave generating device 24 and the receiving device 25 are positioned on the same plane;
the openable glass door 25 is placed between the electromagnetic wave receiving device 23 and the electromagnetic wave emitting device 24, and is used for ensuring the safety of users;
the direct-current power supply control knob 26 is arranged on the demonstration table and located in an operation area and used for adjusting the size of a direct-current power supply of the high-voltage induction coil 245, and the direct-current power supply is 8-12V.
The demonstration method based on the Hertz experiment demonstration device comprises the following steps:
through the demonstration process, the electromagnetic waves are converted into electric energy to enable the neon tube to emit flickering light, and the electromagnetic waves are proved to be transmitted to the receiving device by the generating device, so that the existence of the electromagnetic waves is demonstrated.
Where mentioned above are merely embodiments of the invention, any feature disclosed in this specification may, unless stated otherwise, be replaced by alternative features serving equivalent or similar purposes; all of the disclosed features, or all of the method or process steps, may be combined in any combination, except mutually exclusive features and/or steps.
Claims (3)
1. Hertz's experiment presentation device includes: the device comprises a demonstration table (1), an experimental device (2) and a darkroom (3), wherein the experimental device is arranged on the demonstration table, and the demonstration table is arranged in the darkroom; it is characterized in that the preparation method is characterized in that,
the experimental device (2) comprises: a neon tube (21), a neon tube bracket (22), an electromagnetic wave receiving device (23), an electromagnetic wave generating device (24) and a control knob (26) of a direct current power supply; wherein the content of the first and second substances,
the neon tube (21) is fixed on the demonstration table through a neon tube bracket (22);
the electromagnetic wave generating device (24) includes: two large transmitting copper balls (241, 242), two copper rods (243, 244), two small transmitting copper balls (246, 247), a copper rod bracket (248), a high-voltage induction coil (245) and a lead; one end of each copper rod is welded with a small launching copper ball, the other end of each copper rod is welded with a large launching copper ball, the two copper rods are respectively fixed on the demonstration table through copper rod brackets and are positioned on the same straight line, so that the two small launching copper balls are oppositely arranged, and an air gap is formed between the two small launching copper balls; the two copper rods are respectively connected with the positive electrode and the negative electrode of the high-voltage induction coil through leads;
the electromagnetic wave receiving device (23) and the electromagnetic wave generating device (24) are positioned on the same plane, and the electromagnetic wave receiving device comprises: a copper wire frame (231), a wire frame support (232), two receiving copper balls (233, 234) and a lead; the copper wire frame is provided with an opening, the two copper receiving balls are respectively fixed at the open end of the copper wire frame, and the copper receiving balls and the small launching copper balls are arranged in a one-to-one correspondence manner; the copper wire frame is fixed on the demonstration table through a wire frame bracket and is connected with the neon tube through a lead;
the direct-current power supply control knob (26) is arranged on the demonstration table and is used for adjusting the size of a direct-current power supply of the high-voltage induction coil;
the experimental device (2) further comprises an openable glass door (25), and the openable glass door is placed between the electromagnetic wave receiving device and the electromagnetic wave emitting device and used as a safety measure.
2. A hertz experiment demonstration apparatus as claimed in claim 1 wherein said darkroom (3) is formed by a darkroom main body (32) and an openable and closable window shade (31) provided on one side of the darkroom main body for shading light and adjusting the ambient brightness of the darkroom to make the phenomenon conspicuous.
3. The hertzian experiment demonstration device according to claim 1, characterized in that the copper wire frame (231) is circular or rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010679423.6A CN111899613B (en) | 2020-07-15 | 2020-07-15 | Hertz experiment demonstration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010679423.6A CN111899613B (en) | 2020-07-15 | 2020-07-15 | Hertz experiment demonstration device |
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| Publication Number | Publication Date |
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| CN111899613A CN111899613A (en) | 2020-11-06 |
| CN111899613B true CN111899613B (en) | 2022-07-26 |
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| CN202010679423.6A Active CN111899613B (en) | 2020-07-15 | 2020-07-15 | Hertz experiment demonstration device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5772445A (en) * | 1995-07-13 | 1998-06-30 | Mousaa; Victor Roland | Electrostatic meter |
| CN204117452U (en) * | 2014-08-22 | 2015-01-21 | 田坤 | A kind of multi-functional charge property demonstration case |
| CN205158744U (en) * | 2015-11-07 | 2016-04-13 | 南昌航空大学 | Sound wave driven magnetic suspension rotator demonstration appearance |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU980129A1 (en) * | 1981-04-30 | 1982-12-07 | Одесский Ордена Трудового Красного Знамени Государственный Университет Им.И.И.Мечникова | Device for demonstrating frank's and hertz's experiments |
| US6930235B2 (en) * | 2001-03-15 | 2005-08-16 | Ms Squared | System and method for relating electromagnetic waves to sound waves |
| CN106448385B (en) * | 2016-11-03 | 2019-06-04 | 余姚市智达教仪设备成套有限公司 | Hertzian experiment demonstration device |
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2020
- 2020-07-15 CN CN202010679423.6A patent/CN111899613B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5772445A (en) * | 1995-07-13 | 1998-06-30 | Mousaa; Victor Roland | Electrostatic meter |
| CN204117452U (en) * | 2014-08-22 | 2015-01-21 | 田坤 | A kind of multi-functional charge property demonstration case |
| CN205158744U (en) * | 2015-11-07 | 2016-04-13 | 南昌航空大学 | Sound wave driven magnetic suspension rotator demonstration appearance |
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| CN111899613A (en) | 2020-11-06 |
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