CN203759985U - Sun shadow change teaching demonstrator - Google Patents
Sun shadow change teaching demonstrator Download PDFInfo
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- CN203759985U CN203759985U CN201420185892.2U CN201420185892U CN203759985U CN 203759985 U CN203759985 U CN 203759985U CN 201420185892 U CN201420185892 U CN 201420185892U CN 203759985 U CN203759985 U CN 203759985U
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- railway line
- fixed block
- base plate
- sun
- translucent cover
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Abstract
The utility model relates to a sun shadow change teaching demonstrator which comprises a bottom plate, a semispherical transparent cover, a first track line, a second track line, a third track line, a bracket, length measuring scales, a first fixing block, a second fixing block, a wood rod and a light source, wherein the bottom plate is fixedly connected with the lower end of the semispherical transparent cover; the wood rod extending upward is arranged at the center position of the bottom plate; multiple length measuring scales are uniformly arranged on the surface of the front semicircle of the bottom plate; and the edge of the outer arc of the rear semicircle of the bottom plate is externally connected with the bracket. By adopting the sun shadow change teaching demonstrator provided by the utility model, the following aims can be achieved within short time by the students through simulation experiments in an indoor environment: the students can continuously observe the change conditions of the 'sun shadow' in one day to discover the rule; the students can observe the change conditions of the shadow length of the same object at high noon on different dates in four seasons of a year to discover the rule; and the students can observe the difference of the shadow length of the same object at the same time in different latitude regions.
Description
Technical field
The utility model relates to teaching equipment field, is specifically related to a kind of shadows cast by the sun and changes education demonstrator.
Background technology
In the teaching that branch of science shadows cast by the sun change, allow student just can find intuitively following rule at short notice:
The rule that among (1) one day, shadows cast by the sun change;
(2) the long Changing Pattern of same object shadow at high noon in same date not throughout the year;
(3) different latitude area, the long difference of shadow of same same object of time.
And also not having this series products that can meet teaching needs at present, the equipment relevant to " shadows cast by the sun " has corona, ancient Chinese sundial etc., but all will be placed on outdoor observation, and will have the irradiation of sunlight, cannot see shadow when not having sunlight; And utilize sunlight to observe shadows cast by the sun to change, must wait until that the specific time carries out, can not on classroom, demonstrate at any time, be unfavorable for the enforcement of teaching.
Utility model content
For addressing the above problem, technical problem to be solved in the utility model is to provide a kind of shadows cast by the sun and changes education demonstrator.
The technical scheme that this utility model solves the problems of the technologies described above is as follows: a kind of shadows cast by the sun change education demonstrator, comprise base plate, semisphere translucent cover, the first railway line, the second railway line, the 3rd railway line, bevel protractor, support, length measuring ruler, the first fixed block, the second fixed block, rod and light source, described base plate is circular, described base plate is fixedly connected on described semisphere translucent cover lower end, in the center of described base plate, be provided with upwardly extending described rod, on the surface of the front semicircle of described base plate, be evenly provided with a plurality of described linear measure longimetry rulers, one end of described length measuring ruler is connected on the bottom of described rod, extend to the external arc direction of described base plate other one end of described length measuring ruler, edge in the rear semicircle external arc of described base plate is circumscribed with described support, described bevel protractor is arranged on described support by rotating shaft,
On described semisphere translucent cover, be provided with described the first railway line, the second railway line and the 3rd railway line, described the first railway line, the second railway line and the 3rd railway line are parallel to each other, and described the second railway line is between described the first railway line and the 3rd railway line;
At described base plate with respect to front, the both sides of rear semicircle are respectively equipped with described the first fixed block and described the second fixed block, on described the first fixed block and described the second fixed block, be equipped with the first coil tension spring button, the second fixed support and the 3rd coil tension spring button, the two ends of described the first railway line are all passed respectively described the first fixed block and described the second fixed block and are connected described the first coil tension spring button after the through hole at edge of semicircle before near described base plate, the two ends of described the second railway line are arranged on the middle edge position on described the first fixed block and described the second fixed block by described the second fixed support respectively, the two ends of described the 3rd railway line are all passed respectively described the first fixed block and are connected described the 3rd coil tension spring button with after the through hole of described the second fixed block near the edge of described base plate rear semicircle,
Described light source moves along described the first railway line, the second railway line or the 3rd railway line.
Further, described the first railway line is adsorbed on the surface of described semisphere translucent cover by a plurality of the first transparent suckers.
Further, described the second railway line is adsorbed on the surface of described semisphere translucent cover by a plurality of the second transparent suckers.
Further, described the 3rd railway line is adsorbed on the surface of described semisphere translucent cover by a plurality of the 3rd transparent suckers.
Further, described the first fixed block and described the second fixed block be and concentric circular-arc of described base plate, and described the first fixed block and described the second fixed block and described base plate one-body molded.
The beneficial effects of the utility model are: a kind of shadows cast by the sun that the utility model provides change education demonstrator, can not be subject to the restriction of weather condition, allow student in indoor environment, pass through the simulated experiment of oneself, reach at short notice following object:
(1) situation of change of " shadows cast by the sun " among Continuous Observation to day, finds its rule;
(2) observe throughout the year not the long situation of change of same object shadow at high noon in same date, find its rule;
(3) observe different latitude area, the long difference of same object shadow of same time.
Accompanying drawing explanation
Fig. 1 is the utility model plan structure schematic diagram;
Fig. 2 is the A TV structure schematic diagram of Fig. 1;
Fig. 3 is the B TV structure schematic diagram of Fig. 1;
Fig. 4 is that the sun is at winter solstice, summer solstice and equinoctial movement locus schematic diagram.
In accompanying drawing, the list of parts of each label representative is as follows:
1, base plate, 2, semisphere translucent cover, 3, the first railway line, 4, the second railway line, 5, the 3rd railway line, 6, bevel protractor, 7, support, 8, rotating shaft, 9, length ruler, 10, the second vacuum cup, 11, the first snak link, 12, the first vacuum cup, 13, the second fixed support, 14, the 3rd snak link, 15, the 3rd vacuum cup, 16, the first fixed block, 17, the second fixed block, 18, rod, 19, the sun is at the movement locus of summer solstice, 20, the sun is at equinoctial movement locus, 21, the sun is at the movement locus of winter solstice, 22, footage wheel, 23, light source, 24, zenith.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1,2 and 3, comprise base plate 1, semisphere translucent cover 2, the first railway line 3, the second railway line 4, the 3rd railway line 5, bevel protractor 6, support 7, length measuring ruler 9, the first fixed block 16, the second fixed block 17, rod 18 and light source 23, described base plate 1 is circular, and described base plate 1 is fixedly connected on described semisphere translucent cover 2 lower ends.On described base plate 1, be provided with Word message.The Si Ge orientation, east, south, west, north that word content is included in base plate 1 indicates respectively the printed words of " all directions ", the location that can allow demonstrator grasp all directions, the carrying out of convenient demonstration.Base plate 1 by the semicircle of mark " south " on the geography " knowledge card " changing about shadows cast by the sun and the latitude of China provincial capital and municipality directly under the Central Government, by inquiring about the position of the latitude calculative determination railway line of each provincial capital and municipality directly under the Central Government.Semisphere translucent cover 2 simulation celestial spheres, for being acrylic material making, good transmittance, the variation of being convenient to produce shadow and observing shadow.
Edge in the rear semicircle external arc of described base plate 1 is circumscribed with described support 7, and described bevel protractor 6 is arranged on described support 7 by rotating shaft 8, and footage wheel 22 is all housed in the described rotating shaft 7 of described bevel protractor 6 both sides.By bevel protractor 6, measure angle, thereby determine the position of railway line.Be specially: " 90 " scale mark on bevel protractor 6 is aimed to the summit of semisphere translucent cover 2, zenith 24, simultaneously that " 0 " scale mark on bevel protractor 6 is equal with the surface of base plate 1.Footage wheel 22 is all housed in the described rotating shaft 7 of described bevel protractor 6 both sides, after measurement, by two fingers, rotates footage wheel 22 simultaneously bevel protractor 6 is retracted in rotating shaft 8.
On described semisphere translucent cover 2, be provided with described the first railway line 3, the second railway line 4 and the 3rd railway line 5, described the first railway line 3, the second railway line 4 and the 3rd railway line 5 are parallel to each other, and described the second railway line 4 is between described the first railway line 3 and the 3rd railway line 5.Article three, the particular location of railway line is depending on local latitude.
As shown in Figure 4, by hand-held light source 23, along move simulated solar respectively of the first railway line 3, the second railway line 4 and the 3rd railway line 5, in winter solstice, spring and autumn, divide and the moving of summer solstice on these four representative dates.In the center of described base plate 1, be provided with upwardly extending described rod 18, light source 23 is when moving along railway line, and rod 18 forms shadow under the irradiation of light source 23 on base plate 1, and the shadow of rod 18 changes along with the motion of light source 23.On the surface of the front semicircle of described base plate 1, be evenly provided with a plurality of described linear measure longimetry rulers 9, one end of described length measuring ruler 9 is connected on the bottom of described rod 18, and extend to the external arc direction of described base plate 1 other one end of described length measuring ruler 9.By linear measure longimetry ruler 9, measure shadow length and the record data of rod 18, according to the data of record, draw the long bar shaped statistical graph changing of shadow, contribute to student to sharpen understanding and grasp shadows cast by the sun Changing Pattern.
At described base plate 1, with respect to the both sides of forward and backward semicircle, be respectively equipped with described the first fixed block 16 and described the second fixed block 17, at described the first fixed block 16 and described the second fixed block 17 corresponding positions, all indicate " winter solstice ", " summer solstice ", " divide spring and autumn " printed words.Described the first fixed block 16 and described the second fixed block 17 be and concentric circular-arc of base plate 1, and described the first fixed block 16 and described the second fixed block 17 one-body molded with described base plate 1.The effect of two fixed blocks has: the one, by fixed block, three railway lines are fixed; The 2nd, shown intuitively the sun operation area on celestial sphere throughout the year; The 3rd,, by holding fixed block, can move demonstration device.
At described base plate 1 with respect to front, the both sides of rear semicircle are respectively equipped with described the first fixed block 16 and described the second fixed block 17, on described the first fixed block 16 and described the second fixed block 17, be equipped with the first coil tension spring button 11, the second fixed support 13 and the 3rd coil tension spring button 14, the two ends of described the first railway line 3 are all passed respectively described the first fixed block 16 and are connected described the first coil tension spring button 11 with after the through hole of described the second fixed block 17 near the edge of described base plate 1 front semicircle, the two ends of described the second railway line 4 are arranged on described the first fixed block 16 and described the second fixed block respectively 17 middle edge position by described the second fixed support 13, the two ends of described the 3rd railway line 5 are all passed respectively described the first fixed block 16 and are connected described the 3rd coil tension spring button 14 with after the through hole of described the second fixed block 17 near the edge of described base plate 1 rear semicircle.The length of stretching respectively the first railway line 3, the 3rd railway line 14 by the first coil tension spring button 11, the 3rd coil tension spring button 14, to adapt to the diverse location of railway line in translucent spherical translucent cover 2.
Described the first railway line 3 is adsorbed on the surface of described semisphere translucent cover 2 by a plurality of the first transparent suckers 12.Described the second railway line 4 is adsorbed on the surface of described semisphere translucent cover 2 by a plurality of the second transparent suckers 10.Described the 3rd railway line 5 is adsorbed on the surface of described semisphere translucent cover 2 by a plurality of the 3rd transparent suckers 15.Railway line regulates after length by coil tension spring button, further by vacuum cup, each railway line absorption is close on the surface of semisphere transparent ball 2.
Take Guangzhou below describes a concrete operating process as example:
1. search local latitude, calculate and divide the angle of cut of track and ground level spring and autumn and determine orbital position.
The latitude that latitude table by China provincial capital and municipality directly under the Central Government on base plate 1 checks in Guangzhou is about 23 °, and 90 °-23 °=67 °, the angle of cut that divides orbit plane and horizontal circle spring and autumn is 67 °.Pull out bevel protractor 6, " 90 " scale mark on bevel protractor 6 is aimed to the zenith 24 of semi-transparent spheres 2, " 0 " scale mark on bevel protractor 6 is equal with base plate 1, find position mark on the semisphere translucent cover 2 corresponding with 67 ° shown in bevel protractor 6, the second railway line 4 is placed in to mark, and fixes with the second transparent sucker 10 on railway line.
2. after having determined the second railway line 4, the first railway line 3 on semisphere translucent cover 2 and the 3rd railway line 5 are adjusted to parallel with the second railway line 4, and fix with corresponding sucker.If regulate the length of cotton rope, cotton rope can trip spring button stretches.
3. observe the Changing Pattern of shadow under this day sunlight of equinox.
Hand-held light source 23, slowly mobile from east orientation west along the second railway line 4, companion observes the orientation of rod 18 shadows, and observes the variation of shadow length, meanwhile, and can the long data of primary part observation length ruler 9 place's shadow, draw the long bar shaped statistical graph changing of shadow.
4. same hand-held light source 23 moves along first and third railway line respectively, observes the situation of change of this two days shadows of the Summer Solstice, Winter Solstice, and during relatively along these three different orbital motions, what difference the shadow long data at high noon has.
5. an area that latitude is different of alternative, observes shadow Changing Pattern according to aforesaid operations, and relatively why not same the shadow of two different regions, place has at one time.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. shadows cast by the sun change education demonstrator, it is characterized in that: comprise base plate (1), semisphere translucent cover (2), the first railway line (3), the second railway line (4), the 3rd railway line (5), bevel protractor (6), support (7), length measuring ruler (9), the first fixed block (16), the second fixed block (17), rod (18) and light source (23), described base plate (1) is circular, described base plate (1) is fixedly connected on described semisphere translucent cover (2) lower end, in the center of described base plate (1), be provided with upwardly extending described rod (18), on the surface of the front semicircle of described base plate (1), be evenly provided with a plurality of described linear measure longimetry rulers (9), one end of described length measuring ruler (9) is connected on the bottom of described rod (18), extend to the external arc direction of described base plate (1) other one end of described length measuring ruler (9), edge in the rear semicircle external arc of described base plate (1) is circumscribed with described support (7), described bevel protractor (6) is arranged on described support (7) by rotating shaft (8),
On described semisphere translucent cover (2), be provided with described the first railway line (3), the second railway line (4) and the 3rd railway line (5), described the first railway line (3), the second railway line (4) and the 3rd railway line (5) are parallel to each other, and described the second railway line (4) is between described the first railway line (3) and the 3rd railway line (5);
At described base plate (1) with respect to front, the both sides of rear semicircle are respectively equipped with described the first fixed block (16) and described the second fixed block (17), on described the first fixed block (16) and described the second fixed block (17), be equipped with the first coil tension spring button (11), the second fixed support (13) and the 3rd coil tension spring button (14), the two ends of described the first railway line (3) are all passed respectively described the first fixed block (16) and are connected described the first coil tension spring button (11) with after the through hole of described the second fixed block (17) near the edge of the front semicircle of described base plate (1), the two ends of described the second railway line (4) are arranged on respectively the middle edge position of (17) on described the first fixed block (16) and described the second fixed block by described the second fixed support (13), the two ends of described the 3rd railway line (5) are all passed respectively described the first fixed block (16) and are connected described the 3rd coil tension spring button (14) with after the through hole of described the second fixed block (17) near the edge of described base plate (1) rear semicircle,
Described light source (23) is along described the first railway line (3), the second railway line (4) or the motion of the 3rd railway line (5).
2. a kind of shadows cast by the sun according to claim 1 change education demonstrator, it is characterized in that: footage wheel (22) is all housed in the described rotating shaft (7) of described bevel protractor (6) both sides.
3. a kind of shadows cast by the sun according to claim 1 change education demonstrator, it is characterized in that: described the first railway line (3) is adsorbed on the surface of described semisphere translucent cover (2) by a plurality of the first transparent suckers (12).
4. a kind of shadows cast by the sun according to claim 1 change education demonstrator, it is characterized in that: described the second railway line (4) is adsorbed on the surface of described semisphere translucent cover (2) by a plurality of the second transparent suckers (10).
5. a kind of shadows cast by the sun according to claim 1 change education demonstrator, it is characterized in that: described the 3rd railway line (5) is adsorbed on the surface of described semisphere translucent cover (2) by a plurality of the 3rd transparent suckers (15).
6. according to the arbitrary described a kind of shadows cast by the sun of claim 1 to 5, change education demonstrator, it is characterized in that: described the first fixed block (16) and described the second fixed block (17) for concentric circular-arc of described base plate (1), and described the first fixed block (16) and described the second fixed block (17) and described base plate (1) one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185892.2U CN203759985U (en) | 2014-04-16 | 2014-04-16 | Sun shadow change teaching demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185892.2U CN203759985U (en) | 2014-04-16 | 2014-04-16 | Sun shadow change teaching demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203759985U true CN203759985U (en) | 2014-08-06 |
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ID=51255232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420185892.2U Expired - Fee Related CN203759985U (en) | 2014-04-16 | 2014-04-16 | Sun shadow change teaching demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203759985U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192025A (en) * | 2018-10-09 | 2019-01-11 | 瑞安市任奇科技有限公司 | A kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating |
| CN114155769A (en) * | 2022-01-08 | 2022-03-08 | 湖州师范学院 | Equatorial sundial principle demonstration instrument |
-
2014
- 2014-04-16 CN CN201420185892.2U patent/CN203759985U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192025A (en) * | 2018-10-09 | 2019-01-11 | 瑞安市任奇科技有限公司 | A kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating |
| CN109192025B (en) * | 2018-10-09 | 2020-07-07 | 瑞安市任奇科技有限公司 | Single slit diffraction experiment demonstration device for physics teaching |
| CN114155769A (en) * | 2022-01-08 | 2022-03-08 | 湖州师范学院 | Equatorial sundial principle demonstration instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20150416 |
|
| EXPY | Termination of patent right or utility model |