CN201138533Y - Principle demonstrator for sundial - Google Patents
Principle demonstrator for sundial Download PDFInfo
- Publication number
- CN201138533Y CN201138533Y CNU2008201010316U CN200820101031U CN201138533Y CN 201138533 Y CN201138533 Y CN 201138533Y CN U2008201010316 U CNU2008201010316 U CN U2008201010316U CN 200820101031 U CN200820101031 U CN 200820101031U CN 201138533 Y CN201138533 Y CN 201138533Y
- Authority
- CN
- China
- Prior art keywords
- geoid
- corona
- axis
- gnomonics
- sundial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Walking Sticks, Umbrellas, And Fans (AREA)
Abstract
A sundial principle demonstration instrument relates to a geography teaching aid. The utility model provides a sundial principle demonstration instrument which can intuitively demonstrate the contents like the sundial principle and the height angle of a sun; the utility model is provided with a geoid, a magnet, a sundial, a spin axis and a base; the magnet is arranged in the geoid; the sundial is arranged on the outer surface of the geoid; an iron piece or a magnetic piece is arranged on the sundial; the sundial is correspondingly sucked with the magnet; the spin axis is arranged on the axes of the south and north poles of the geoid, namely the spin axes of the geoid; the spin axis and the geoid are rotatably connected; the spin axis is fixedly connected with the base directly or indirectly.
Description
Technical field
The utility model relates to a kind of geographical knowledge teaching aid, relates in particular to a kind of gnomonics demonstrator that corona and terrestrial globe are combined
Background technology
Common teaching terrestrial globe is difficult for object produces under the demonstration solar radiation shadow and Changing Pattern thereof, can not demonstrate knowledge contents such as elusive gnomonics of student and sun altitude.
Summary of the invention
But the purpose of this utility model provides the gnomonics demonstrator of contents such as a kind of ocular demonstration gnomonics and sun altitude.
The utility model is provided with geoid, magnet, corona, the axis of rotation and base; Magnet is positioned at geoid; Corona is positioned on the outside surface of geoid, and corona is provided with irony part or magnetic part, the corresponding adhesive with magnet of corona; The axis of rotation is located on the north-south axis of geoid, and promptly on the rotation axis of geoid, for being rotationally connected, the axis of rotation directly or by web member and base is connected between the axis of rotation and the geoid.
Corona can be selected dissimilar coronas such as adjustable inclination angle formula equator corona, altitude azimuth form corona, reason corona and vertical vertical rod corona for use.
Described irony part preferably is located at the bottom of corona, and the irony part can be made as iron plate.
The axis of rotation is preferably the single rotating shaft of passing geoid.
Base is provided with index dial and Warning Mark in season, the scale that Warning Mark can corresponding indication index dial in season, and season, index dial and base were rotationally connected.
Season, index dial was provided with 1 solar term every 15 degree, and totally 24 solar term are initial point with Winter Solstice, press the solar term order in the counterclockwise direction and indicate, when the incident direction of the south pole orientation of the axis of rotation and sunray over against the time, the scale that Warning Mark is indicated is Winter Solstice.
Demonstration principle of the present utility model:
The utility model is reference system with the earth's core, and the light source of demonstration can be sunshine (also can adopt projector light).During demonstration, with corona and magnet adhesive, then corona is moved (can be moved to any position of different latitude) on the outside surface of geoid, when moving to the geographic position of required observation, make the projection at sundial face center drop on this geographical location, make base Warning Mark index dial in corresponding season corresponding solar term (as Winter Solstice) and keep base motionless.This moment is spheroid rotationally eastwards from the west, corona also rotates with geoid, then the height of the suffered solar light irradiation of corona and angle just change thereupon, the sunshine that can see these solar term also moves at the shadow that is incident upon on the sundial face that the sundial pin on the corona is produced thereupon, and the mobile correspondence of sundial pin shadow each time scale on the sundial face.So just can observe this geographic position continuously in corresponding seasonal, sun altitude and the Changing Pattern between the time.Thereby make the student be more readily understood geographical knowledge.
Advantage of the present utility model:
1, directly perceived, image, lively can effectively improve student's geographical space visionary;
2, making is simple, easy to use;
3, can demonstrate any solar term on the earth, any latitude, dissimilar gnomonics;
4, can demonstrate the sun shadow of any solar term, any latitude on the earth and the Changing Pattern of sun altitude.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Referring to Fig. 1, the utility model be provided with geoid 1, magnet 2, corona (constituting), the axis of rotation 4, web member 6, base 5 by sundial face 31, sundial pin 32 and irony egative film 33 and season index dial 51; Geoid 1 is a spherical shell, and its outside surface has earth figure for teaching, and magnet 2 is positioned at geoid 1; Corona 3 is an adjustable inclination angle formula equator corona, is positioned on the outside surface of geoid 1, and the bottom of corona 3 is provided with irony egative film 33, corona 3 and magnet 2 corresponding adhesives; The single rotating shaft of the axis of rotation 4 for passing geoid 1 is located on the north-south axis of geoid 1, promptly on the rotation axis of geoid 1, can relatively rotate between the axis of rotation 4 and the geoid 1, and the axis of rotation 4 is connected by web member 6 and base 5; Base 5 bottom surfaces are provided with index dial 51 in season, and base 5 is provided with indication arrow 52, the scale of indication arrow 52 corresponding indication index dials in season 5, and season, index dial 51 was rotatably assorted with base 5.
Season, index dial 51 was provided with 1 solar term every 15 degree, and totally 24 solar term are initial point with Winter Solstice, press the solar term order in the counterclockwise direction and indicate, when the incident direction of the south pole orientation of the axis of rotation 4 and sunray over against the time, the scale of indicating arrow 52 to indicate is Winter Solstice.
Above-mentioned irony egative film 33 also can be replaced by magnetic part.
Claims (7)
1. the gnomonics demonstrator is characterized in that being provided with geoid, magnet, corona, the axis of rotation and base; Magnet is positioned at geoid; Corona is positioned on the outside surface of geoid, and corona is provided with irony part or magnetic part, the corresponding adhesive with magnet of corona; The axis of rotation is located on the north-south axis of geoid, and promptly on the rotation axis of geoid, for being rotationally connected, the axis of rotation directly or by web member and base is connected between the axis of rotation and the geoid.
2. gnomonics demonstrator as claimed in claim 1 is characterized in that corona is adjustable inclination angle formula equator corona, altitude azimuth form corona, reason corona or vertical vertical rod corona.
3. gnomonics demonstrator as claimed in claim 1 is characterized in that described irony part is located at the bottom of corona, and the irony part is an iron plate.
4. gnomonics demonstrator as claimed in claim 1 is characterized in that the axis of rotation is the single rotating shaft of passing geoid.
5. gnomonics demonstrator as claimed in claim 1 is characterized in that base is provided with index dial and Warning Mark in season, the scale of the corresponding indication of Warning Mark index dial in season.
6. gnomonics demonstrator as claimed in claim 5, it is characterized in that season index dial and base be rotationally connected.
7. as claim 5 or 6 described gnomonics demonstrators, it is characterized in that season, index dial was provided with 1 solar term every 15 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201010316U CN201138533Y (en) | 2008-01-03 | 2008-01-03 | Principle demonstrator for sundial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201010316U CN201138533Y (en) | 2008-01-03 | 2008-01-03 | Principle demonstrator for sundial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201138533Y true CN201138533Y (en) | 2008-10-22 |
Family
ID=40039216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201010316U Expired - Fee Related CN201138533Y (en) | 2008-01-03 | 2008-01-03 | Principle demonstrator for sundial |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201138533Y (en) |
-
2008
- 2008-01-03 CN CNU2008201010316U patent/CN201138533Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20100203 |