CN115547169A

CN115547169A - Teaching demonstration instrument for solar vision movement

Info

Publication number: CN115547169A
Application number: CN202211288131.5A
Authority: CN
Inventors: 范贵龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2022-12-30

Abstract

The invention discloses a sun vision movement teaching demonstration instrument, which comprises: the ground plane plate is a circular plate surface, the east end and the west end of the plate surface are provided with latitude protractors, the rotating rod is accommodated in the plate surface along the east-west direction, and the bottom of the plate surface is provided with a latitude adjusting motor for driving the rotating rod to rotate and a supporting seat for supporting the plate surface; the regulator comprises a screw rod and a date comparison plate which are arranged in parallel, the middle of the date comparison plate is connected with a rotating rod, and a latitude pointer for indicating the latitude and a date regulating motor for driving the screw rod to rotate are arranged on the date comparison plate; the sun sight movement track is an annular sliding rail, the ring body of the sun sight movement track penetrates through a gap between the screw rod and the date comparison plate, the two ends of the ring body are connected with the screw rod through threaded lug seats, the plane of the ring body is vertical to the screw rod, and a sun simulator is arranged on the ring body. The solar vision movement teaching demonstration instrument adopting the structure has richer demonstration content and better teaching effect.

Description

Teaching demonstration instrument for solar vision movement

Technical Field

The invention relates to the technical field of teaching instruments, in particular to a solar vision movement teaching demonstration instrument.

Background

The movement of the sun relative to observers on the earth, namely the apparent movement of the sun, reveals the space-time distribution rule of the sun on the earth radiation, and determines the division of five zones of the earth and the formation of four seasons. In teaching, the sun vision movement is explained by adopting a paper teaching material and a model mode. The paper teaching material mode is relatively abstract, inconvenient to understand and not beneficial to the memory of students. Model mode, current teaching aid model are all comparatively simple, and solar motion track all is fixed mode, and the explanation content is limited, and the model has bulky, the inconvenient scheduling problem of demonstration moreover.

Disclosure of Invention

The invention aims to provide a sun vision movement teaching demonstration instrument with more comprehensive functions, which supports adjustment of a sun movement track, and solves the problem of poor explanation effect of the existing sun vision movement teaching instrument model.

In order to realize the purpose, the invention provides the following technical scheme:

motion teaching demonstration appearance is looked to sun includes:

the floor panel is a circular panel, latitude protractors for measuring the latitude are arranged at the east end and the west end of the panel, the rotating rod is accommodated in the panel along the east-west direction, and the bottom of the panel is provided with a latitude adjusting motor for driving the rotating rod to rotate and a supporting seat for supporting the panel;

the regulator comprises a screw rod, two ends of the screw rod are connected with angle steel through bearings, a date comparison plate is fixed between the angle steel, and a rotating rod is connected in the middle of the date comparison plate; the date comparison board is provided with dates corresponding to spring/autumn, summer solstice and winter solstice along the board body, the upper part of the board body is also provided with a latitude pointer for indicating the latitude, and the tail end of the board body is also provided with a date adjusting motor for driving the screw rod to rotate;

the sun sight motion track is an annular slide rail, the ring body of the sun sight motion track penetrates through a gap between the screw and the date comparison plate, two ends of the ring body are connected with the screw through threaded lug seats, the plane of the ring body is vertical to the screw, and the ring body is provided with a sun simulator; the solar simulator moves along the ring body and takes the button cell as a power supply.

Preferably, the two side ring surfaces of the sun vision movement track are provided with sliding grooves along the ring body, and the inner ring surface of the sun vision movement track is provided with racks along the ring body; the solar simulator is characterized in that a light source is arranged on the surface of a substrate of the solar simulator, the back of the substrate is hung in a sliding chute of a solar visual motion track by four limiting wheels, and a visual motion motor is fixed on the side of the substrate; the sight motion motor is meshed with the rack through the gear, the light source points to the circle center of the sun sight motion track, and the sight motion motor and the light source are powered by the button cell.

Preferably, a circular through hole is further formed in the middle of the ground plane, a transparent seat is arranged on the bottom side of the circular through hole, and the transparent seat is fixed on the supporting seat; an equatorial sundial is arranged in the circular through hole, the sundial is locked on the rotating rod in a detachable mode, and the end face of the sundial is always parallel to the solar visual motion track surface.

Preferably, the surface of the floor panel is also provided with limiting strips along the north-south direction, and convex slots for inserting the guy list are formed between the limiting strips; the square meter, its square portion and bottom plate form the convex strip block, its table portion is set up in the middle of square portion vertically; the guy part is a magnetic plate and is matched with two magnetic blocks for marking spring, summer, autumn and winter.

Preferably, a hollow turntable is arranged on the top side of the supporting seat, and the transparent seat is fixed by the hollow turntable through four screws.

Preferably, a flat part is arranged on the part, located on the circular through hole, of the rotating rod, the plane of the flat part is perpendicular to the date comparison plate, and the width of the flat part is equal to the diameter of the sundial; a sundial needle of the sundial is inserted into the magnetic ring, the magnetic ring is fixed on the end face of the sundial, and the sundial is adsorbed on the flat part through the magnetic ring.

In conclusion, the sun vision movement teaching demonstration instrument adopting the structure can adjust the sun vision movement track according to the date and the latitude, and improves the demonstration effect of the teaching aid. Moreover, the sundial and the guy table are integrated on the teaching aid, so that the teaching content of the teaching aid is further enriched. In addition, all the adjusting actions can be realized in a remote control mode, and the teaching and the use are more convenient.

Drawings

FIG. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a side view of an embodiment of the present invention;

FIG. 3 is a top view of an embodiment of the present invention;

FIG. 4 is a schematic view of the regulator according to an embodiment of the present invention;

FIG. 5 is a schematic plan view of a floor panel in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an guy list according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a latitude protractor in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a solar view motion track and a solar simulator thereon according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of the displacement of the solar apparent motion orbit and the solar simulator in the embodiment of the present invention;

FIG. 10 is a schematic structural view of an equatorial sundial in an embodiment of the invention;

fig. 11 is a schematic view of the north (left) and south (right) of an equatorial sundial in an embodiment of the invention;

FIG. 12 is a schematic view of a support stand according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a bridge in an embodiment of the invention.

Reference numerals

1. A regulator; 2. a floor panel; 3. the sun looks at the orbit of motion; 4. a sundial; 5. a transparent base; 6. a support frame; 11. a screw; 12. a date comparison board; 121. a latitude pointer; 122. a date adjustment motor; 13. angle steel; 14. a bearing; 15. a rotating rod; 151. a flat portion; 21. a limiting strip; 22. a latitude protractor; 23. a circular through hole; 24. a base plate; 25. a watch part; 26. an ash tray part; 31. a slide rail; 311. a chute; 312. a rack; 32. a threaded lug; 33. a solar simulator; 331. a limiting wheel; 332. a substrate; 333. a light source; 41. a dial surface; 42. a magnetic ring; 43. a dial needle; 61. a hollow turntable; 62. and locking the bearing.

Detailed Description

The technical scheme of the invention is further explained by combining the drawings and the embodiment.

As shown in fig. 1 to 3, the solar apparent motion teaching demonstration instrument comprises a support frame 6, a ground plane 2, an adjuster 1, a solar apparent motion track 3, a sundial 4 model, an gnomone and the like, and adopts a full-automatic design.

1. Supporting frame

As shown in fig. 12, the supporting frame 6 mainly plays a supporting role, the lower part of the supporting frame is fixed by a double-locking bearing 62, a U-shaped handle is formed in the middle of the supporting frame, a hollow turntable 61 is arranged at the upper end of the supporting frame, and four screw fixing positions are arranged on the hollow turntable 61.

2. Floor panel

As shown in fig. 5, the floor panel 2 is a circular panel with a diameter of 45cm, and a circular through hole 23 with a diameter of 12cm is provided in the middle. On the plate surface, the east, south, west and north directions are determined at the periphery. From the east-right direction, the sunrise azimuth angle (0-90 degrees to the north and 0-90 degrees to the south) is marked in the clockwise direction and the counterclockwise direction respectively; from the positive west position, the sunset azimuth angles (0-90 degrees north west and 0-90 degrees south west) are respectively marked in clockwise and counterclockwise directions.

Respectively calculating equator and 10 equator of 22 days (northern hemisphere summer solstice) in 6 months and 22 days (northern hemisphere winter solstice) in 12 months according to sunrise and sunset azimuth angle formulas ⁰ N、20 ⁰ N、30 ⁰ N、40 ⁰ N、50 ⁰ N、60 ⁰ N、60 ⁰ 34' N of sunrise and sunset. Sunrise direction angle: on the equator are respectively east-north and east-south 23 ⁰ 26’，10 ⁰ About 24 on N for north and south east ⁰ ，20 ⁰ N is north east and south east 25 respectively ⁰ ，30 ⁰ About 27.5 on N for north and south east, respectively ⁰ ，40 ⁰ About 31.5 on N, respectively north and south ⁰ ，50 ⁰ About 38.5 on N for north and south east ⁰ ，60 ⁰ N is north east and south east 53 ⁰ ；60 ⁰ 34' N are approximately 90 deg. east-north and east-south, respectively. The degree of the sunset azimuth is the same as the sunrise azimuth, but the azimuth is north and south respectively. These azimuth angles are marked on the ground plane 2, and the sunrise (sunset) azimuth angles of the winter and summer solstice at the same latitude are connected by lines.

A transparent seat 5 with the height of 15cm and the diameter of 12cm is arranged below the circular through hole 23 and is fixed on the hollow turntable. On the ground plane plate 2, a latitude protractor 22 for measuring latitude is arranged at the righteast end and the rightwest end, and a limit strip 21 for limiting the guy-watch is arranged in the right south-north direction. In the floor panel 2, a rotary rod 15 is accommodated in the east-west direction, and a 90-tooth driven gear is mounted on one end of the rotary rod 15. A latitude adjusting motor with the working voltage of 6v and the speed of 3 revolutions per minute is arranged below the ground plane plate 2, and a driving gear with 10 teeth is arranged on an output shaft of the motor. The driving gear is meshed with the driven gear, and the latitude adjusting motor is controlled by the controller to rotate positively and negatively so as to drive the rotating rod 15 to rotate positively and negatively.

3. Regulator

As shown in fig. 4, the regulator 1 includes a screw 11, and two ends of the screw 11 are connected to angle steels 13 through bearings 14, a date comparison plate 12 is fixed between the angle steels 13, and a rotating rod 15 is connected to the center of the date comparison plate 12. The date comparison board 12 is 30cm long, dates corresponding to spring/autumn, summer solstice and winter solstice are arranged along the board body, a latitude pointer 121 used for indicating latitude is further arranged on the upper portion of the board body, and a date adjusting motor 122 with 2000 revolutions per minute and 6V working voltage is further arranged at the tail end of the board body. The screw 11 is connected with the date adjusting motor 122 through a gear set, so that the controller can control the screw 11 to rotate forwards and reversely conveniently.

The regulator 1 is functionally divided into a date regulator and a latitude regulator. The date regulator drives the sun vision motion track 3 to ascend and descend along the date comparison plate 12 through the screw rod 11, and therefore the sun vision motion simulation of different solar terms is achieved. The two regulators are connected with the same controller and controlled by the same remote controller, so that the two ends of the sun vision motion track are synchronously regulated and controlled. The latitude regulator drives the regulator 1 to integrally rotate through the rotating rod 15, so that the sun vision motion simulation of different latitudes is realized.

4. Orbit for seeing movement of sun

As shown in fig. 8, the sun viewing movement track 3 is an annular sliding track 31, the ring body of which passes through the gap between the screw 11 and the date comparison plate 12, the two ends of the ring body are connected to the screw 11 through threaded lugs 32, the plane of the ring body is perpendicular to the screw 11, and the ring body is provided with a sun simulator 33. A 24 hour scale mark is also provided on the ring body to facilitate recording of the position of the solar simulator 33.

As shown in fig. 9, the two side ring surfaces of the sun viewing movement track 3 are provided with sliding grooves 311 along the ring body, and the inner ring surface thereof is provided with racks 312 along the ring body. The sun simulator 33 has a light source 333 provided on the surface of a base plate 332, four stopper wheels 331 on the back of the base plate 332 and suspended in a chute 311 of the solar visual movement rail 3, and a visual movement motor fixed to the side of the base plate 332. The visual motion motor is meshed with the rack 312 through a gear, and the light source 333 points to the center of the sun visual motion track 3. The apparent motion motor and the light source 333 are powered by button cells, thereby facilitating the passage of the solar simulator 33 through the regulator 1.

5. Gnomon (Meter-watch)

As shown in FIG. 6, the guy 26 and the bottom plate 24 of the guy list form a convex block, and the table 25 is vertically arranged at the center of the guy 26. The guy 26 is a magnetic plate and is matched with two magnetic blocks for marking spring, summer, autumn and winter. For convenient guy list installation, ground plane board 2 still is provided with spacing 21 along the true south-true north direction, forms the convex slot that is used for guy list embedding between spacing 21.

6. Sundial

As shown in fig. 10 to 11, a magnetic ring 42 is arranged at the center of the equator type sundial 4, and a sundial 43 is vertically inserted into the middle of the magnetic ring 42. In order to prevent the sundial 4 from deflecting, the flat part 151 is arranged at the upper part and the lower part of the rotating rod 15 corresponding to the circular through hole 23, and the plane of the flat part 151 is perpendicular to the date reference plate 12, so that the magnetic ring 42 is stably adsorbed on the rotating rod 15, and the end surface of the sundial 4 is always parallel to the surface of the sun vision movement track 3. In this embodiment, the sundial 4 is provided with two dial faces 41, the face facing the north face is clockwise designed time information, and the face facing the south face is anticlockwise designed time information.

Based on the solar apparent motion teaching demonstration instrument, the demonstration and exploration contents of ten types and 30 geographic phenomena are developed in the scheme.

First, the sun looks at the movement

1. Demonstrating the solar apparent motion of any day in any latitude area.

And adjusting the latitude regulator to a certain latitude, and respectively turning on the solar simulator and the light source switch to demonstrate the sunday movement phenomenon. And turning on a date regulator switch, and simulating the sun sunday movement phenomenon of a certain place on different dates by utilizing a forward and backward rotation remote controller. The latitude regulator switch is turned on, and the sun weekly apparent movement phenomenon of different latitudes in a certain date can be simulated by utilizing the forward and reverse rotation remote controllers.

2. The annual change situation of the solar apparent motion trail at any latitude is explored.

And adjusting the latitude regulator to a certain latitude, adjusting the date regulator, and watching the change rule of the solar apparent motion trail. The annual solar apparent movement tracks of the same region are approximately parallel.

3. The difference situation of the apparent movement locus of the sun in various parts of the world in a certain day is explored.

And adjusting the date to the required date by using the date adjuster, and then adjusting the latitude adjuster to watch the change of the sun vision movement locus of different latitude areas on the same day. The global solar apparent motion trajectories on the same date are not parallel.

Sunrise (sunset) azimuth angle

1. Demonstrating the change rule of the sunrise azimuth angle (sunset) of the sun in a certain area within one year.

And adjusting the latitude regulator to the area with the required latitude, adjusting the date regulator, respectively turning on the solar simulator and the light source switch, and observing the change rule of the sunrise (sunset) azimuth angle of the sun in the area within one year.

2. And demonstrating the change rule of sunrise (sunset) azimuth angles of areas with different latitudes on the same date.

And adjusting the date adjuster to a required date, and observing the change rule of sunrise (sunset) azimuth angles of different latitude areas of the day by adjusting the latitude adjuster.

3. The sunrise (sunset) azimuth angles of each latitude area of day 6 and day 22 are referred.

Directly reading sunrise (sunset) azimuth angles of all main latitudes through a sunrise (sunset) azimuth angle lookup table on the ground plane board; meanwhile, the date regulator can be regulated to 6 months and 22 days, and then the latitude regulator is regulated to demonstrate the sunrise (sunset) azimuth angle of each latitude area in 6 months and 22 days.

(III) solar altitude within one day

1. Demonstrating the change rule of the solar altitude in any latitude area in one day and supposing the reason.

And adjusting the latitude regulator to the required latitude, and turning on a solar simulator switch to demonstrate the change rule of the solar height in one day.

Solar altitude at noon (IV)

1. Demonstrating the height (angle) of the sun at noon on any day in a certain area.

And adjusting the solar simulator to the

position

12, 00, and turning on a light source switch, wherein the included angle between a connecting line of the sunlight and the central point of the ground plane and the ground plane is the solar altitude at noon of the current day.

2. The change rule of the solar altitude along with the latitude at noon on a certain day is explored.

Adjusting the solar simulator to the position of 12:00, adjusting to the required date by using a date adjuster, then adjusting a latitude adjuster, and observing and comparing the change rule of the height of the sun at noon in different latitude areas on the day. Therefore, the change rule of the altitude of the sun at noon along with the latitude is obtained: the latitude of the direct sun-irradiating point decreases to the north and south.

3. The change rule of the solar altitude along with the season (all year around) at noon in a certain latitude area is explored.

Adjusting the solar simulator to the position of 12:00, adjusting to the required latitude area by using a latitude adjuster, then adjusting a date adjuster, and observing and comparing the change rule of the solar altitude of the latitude area at noon of the whole year.

Through the research, the change rule of the height of the sun at noon along with seasons is obtained: the return line of north and the north area thereof reach the maximum value in 22 days at 6 months and reach the minimum value in 22 days at 12 months. Other dates are between maximum and minimum; in the area from the equator to the northbound return line, the direct day reaches the maximum value, the 12-month 22-day reaches the minimum value, and other dates are between the maximum value and the minimum value; in the south-return line and the south region thereof, 22 days at 12 months reaches the maximum value, and 22 days at 6 months reaches the minimum value. Other dates are between maximum and minimum; from the equator to the southern return, the day of direct exposure reached a maximum, day 22 of 6 months reached a minimum, and the other days were between maximum and minimum.

Change of object shadow

1. Demonstrating the change of the length of the object shadow in any day of a certain latitude.

The gap bridge is placed in a central through hole of the ground plane plate along the north-south direction, and the sundial is placed on the flat part of the gap bridge (at the moment, the sundial needle of the sundial is an object perpendicular to the ground surface). The latitude regulator is regulated to the area with the required latitude, and the change condition of the length of the figure shadow in one day of the latitude can be demonstrated by turning on the motion switch of the solar simulator and the light source switch. By adjusting the date adjuster, the change situation of the length of the object shadow in any day can be demonstrated.

2. Demonstrating the change of the direction of any sky shadow at any latitude (except the north-south pole).

Through the demonstration step 1, the change situation of the direction of the object shadow of any sky at any latitude can be demonstrated.

3. The change rule of the length of the object shadow of the object with the same height along with the latitude at noon of a certain day is explored.

The gap bridge is placed in the central through hole of the ground plane plate along the north-south direction, and the sundial is placed on the flat part of the gap bridge (at the moment, the sundial needle of the sundial is an object perpendicular to the ground surface). Adjust the date adjuster to the desired date. The solar simulator is adjusted to the position 12. And adjusting the latitude adjuster, and observing the change rule of the length of the shadow of the object with the same height along with the latitude in the noon time of the day.

4. The change of the length of the object shadow with seasons (change of the year around) at noon in a certain area is explored.

The gap bridge is placed in a central through hole of the ground plane plate along the north-south direction, and the sundial is placed on the flat part of the gap bridge (at the moment, the sundial needle of the sundial is an object perpendicular to the ground surface). And adjusting the latitude adjuster to the area with the required latitude. Adjust the solar simulator to position 12. And adjusting a date regulator, and observing the change rule of the length of the shadow with seasons (annual change) at noon in the region.

(VI) the length of day and night

1. Demonstrating the long and short day and night conditions (including day and night times) of any area of a certain day.

Adjusting the date adjuster to a desired date and adjusting the latitude adjuster to a desired latitude. And observing the intersection points of the apparent motion track of the sun and the ground plane, wherein the two intersection points are the sunrise and sunset local time of the area at the day. The day length and the night length are obtained by the local time of sunrise/sunset. Comparing the proportion of the day arc and the night arc to obtain the day and night length of the latitude area of the day. And adjusting the latitude regulator, and observing the day and night length of the day in different latitude areas. Through the demonstration, the change rule of day and night length along with the latitude in a certain day is explored.

2. Demonstrating the long and short day and night conditions (including day and night duration) of any day in a certain area.

And adjusting the latitude adjuster to the required latitude. And adjusting a date adjuster to observe the day and night length conditions of different dates in the latitude area. Through the demonstration, the annual change rule (change along with seasons) of day and night length in a certain area is explored.

(VII) extreme daytime and night

1. Demonstrating the range of extreme day and night on the earth on any day.

And adjusting a date adjuster to a certain date, then adjusting a latitude adjuster, and observing the geometric relationship between the solar apparent motion track and the ground plane. When the apparent motion orbit of the sun is all above the ground plane and only one intersection point exists between the apparent motion orbit of the sun and the ground plane, reading the latitude number pointed by the latitude pointer, and then the latitude is a diurnal phenomenon towards high latitude; when the sun sight motion orbit is completely under the ground plane and only one intersection point exists between the sun sight motion orbit and the ground plane, the latitude pointed by the latitude pointer is read, and the phenomenon that the latitude is extremely night towards high latitude is taken.

2. Demonstrating the time and time periods of the extreme day and the extreme night in the extreme day and the extreme night phenomena area.

Adjusting the latitude regulator to latitude areas with extreme daytime (extreme night) (66) ⁰ 34’N—90 ⁰ N，66 ⁰ 34’S—90 ⁰ S), then adjusting a date adjuster, and observing the geometrical relationship between the sun sight movement track and the ground plane. When the solar apparent motion orbit is completely above the ground plane and only one intersection point exists between the solar apparent motion orbit and the ground plane, recording the date, and starting to appear in extreme days at the latitude of the date; when the solar apparent motion orbit is completely under the ground plane and only one intersection point exists between the solar apparent motion orbit and the ground plane, the date is recorded, and the latitude of the date begins to appear in the nighttime. Thereby deducing the latitudeThe time periods of extreme daytime and night appear in the region.

(eight) position of time point and its variation

1. The annual position change rule of each time point (such as 6.

The latitude regulator is adjusted to a certain latitude, then the date regulator is adjusted, and the change of the azimuth of the observer in the whole year at a certain time point (such as 6.

2. The spatial variation law of time points (such as 6.

And adjusting a date adjuster to a certain date, then adjusting a latitude adjuster, and observing the change rule of a certain time point (such as 6.

Sundial

1. Explore why the 'pole-erecting shadow-measuring' method is not directly used for timing.

The gap bridge is placed in a central through hole of the ground plane plate along the north-south direction, the sundial is placed on the flat part of the gap bridge, and 'vertical upright rods on the ground' are simulated. The solar simulator and the light source switch are turned on, the change of the length of the shadow of the object in the daytime of the day is observed, and the orientation of the shadow at any time (such as 6. And adjusting the date adjuster to different dates, repeating the operation steps, observing the change of the length of the shadow of the object in the daytime of the day, and recording the shadow orientation at the moment (such as 6.

And (4) observing and concluding: on different dates, the shadow directions at the same moment are not consistent, and the length of the shadow of the object is changed, so that the time cannot be measured by a method of 'measuring the shadow by standing a pole on the ground'.

2. And (5) demonstrating a time interpretation method of the sundial.

The sundial is placed at the center of the ground plane plate, the date regulator is regulated to any one of 3 months, 21 days to 9 months, 23 days, and the latitude regulator is regulated to any one area with the phenomenon of day and night alternation in the northern hemisphere. And (3) turning on the solar simulator and the light source switch, and observing the time pointed by the shadow of the north sundial needle, wherein the time is the local time at the moment (the time pointed by the shadow of the sundial needle corresponds to the time on the solar apparent motion track). Observing the south sundial surface from 23 days in 9 months to 21 days in 3 months in the next year.

3. Demonstrating the traditional ancient Chinese counting methods of 'Wugeng', 'twelve hours' and 'Ji', and the comparison relationship between ancient counting and local time and Beijing time.

The sundial surface is drawn with a comparison table of ancient 'wugeng', 'twelve hours' (expressed by 12 earthly branches) and local time, so that students can understand the traditional culture of ancient Chinese. Meanwhile, the conversion between the sundial time (local time) and the Beijing time can be realized by using a conversion formula between the local time and the Beijing time.

4. The included angles and reasons between the sundial surface and the sundial needle of the equatorial sundial in different areas and the ground plane plate are researched.

And adjusting the latitude adjuster to any latitude, and reading the degree of the dial indicator protractor. The degree of the dial pin protractor is consistent with that of the latitude protractor (the included angle between the dial pin and the ground plane plate is equal to the local geographic latitude degree). The included angle between the shadow surface and the ground plane plate is complementary to the latitude.

The reason is as follows: the dial needle of the sundial must be parallel to the earth axis. The dial surface of the equatorial sundial and the dial needle must be perpendicular.

5. The change rule of the projection length of the shadow needle of the equatorial sundial on the shadow surface in one day is explored.

And adjusting the date adjuster to a certain date, adjusting the latitude adjuster to a certain latitude area, turning on the solar simulator and the light source switch to enable the solar simulator to move for a circle, and observing the change condition of the projection length of the sundial on the sundial.

6. The change rule of the projection length of the sundial of the equatorial sundial on the sundial surface along with the latitude in one day is explored.

And adjusting the date adjuster to a certain date, turning on the solar simulator and the light source switch, and observing the projection length of the sundial on the sundial surface. And adjusting the latitude adjuster from the north pole to the equator and then to the south pole, and observing the change condition of the projection length of the sundial on the sundial surface.

7. The annual change rule of the shadow cast by the shadow needle of the equatorial sundial in a certain area on the shadow surface is explored.

And adjusting the latitude adjuster to a certain latitude area, turning on the solar simulator and the light source switch, and observing the projection length of the sundial on the sundial surface. The date regulator is regulated for one year, and the change condition of the projection length of the sundial on the shadow surface is observed.

(Ten) guy square

1. The making method and the interpretation of the guy-gao in any latitude area are explored, and the manual making capability of students is developed.

The guy part of the guy is unfolded and the guy part is placed at the center of the ground plane. Adjust the latitude adjuster to the required latitude, adjust the solar simulator to 12. Adjust the date regulator to different date positions (two halves to two), observe the length of the chart on the guy, and mark (move the two halves to the scale mark to the end of the corresponding shadow). Thus, the guy list of the latitude area is completed.

2. The principle of the guy-watch timing is demonstrated, and the Chinese traditional culture is carried forward.

(1) The influence of the length of the watch on the guy note making was explored.

The latitude regulator is regulated to a certain latitude area, and the date regulator is regulated to summer solstice. Unfolding the carafe part of the carafe, adjusting a sun simulator to a position of 12, turning on a light source, placing the carafe part at the center of the ground plane, observing the shadow length of the carafe on the carafe surface, and moving the summer scale to the tail end of the shadow. The length of the watch is changed, the change of the shadow length of the watch with different lengths on the watch surface is observed, and the summer solstice scale is moved according to the change of the shadow length.

(2) The influence of differences in latitude on guy table making was explored.

Adjust date regulator to a certain date, expand the guy part of guy square, adjust the sun simulator to 12, turn on the light source, place the surface part in the center of the ground plane, observe the shadow length of guy square of the guy square, move the summer to the end of the shadow. Adjust the latitude regulator to different dates, observe the change of shadow length of the watch on the guy surface, and move the summer to scale according to the change of shadow length.

3. Demonstration of 24 solar terms

Adjust the latitude adjuster to the required latitude, adjust the solar simulator to 12, turn on the light source. The date regulator is combined with the date regulator to demonstrate 24 solar terms, which are consistent with the solar terms on the date comparison board.

Note: when the demonstration of the geographical phenomena on the north-south pole is involved, the four direction signs of 'south-east-west-north' on the ground plane are invalid (the demonstration of the phenomena on the north pole leads the periphery to be south, and vice versa).

The above is a specific embodiment of the present invention, but the scope of the present invention should not be limited thereto. Any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention, and therefore, the protection scope of the present invention is subject to the protection scope defined by the appended claims.

Claims

1. Motion teaching demonstration appearance is looked to sun, its characterized in that includes:

the sun sight movement track is an annular sliding rail, the ring body of the sun sight movement track penetrates through a gap between the screw and the date comparison plate, the two ends of the ring body are connected with the screw through threaded lug seats, the plane of the ring body is vertical to the screw, and a sun simulator is arranged on the ring body; the solar simulator moves along the ring body and takes the button cell as a power supply.

2. The solar visual motion teaching demonstration instrument according to claim 1, wherein the two side ring surfaces of the solar visual motion rail are provided with sliding grooves along the ring body, and the inner ring surface is provided with racks along the ring body; the solar simulator is characterized in that a light source is arranged on the surface of a substrate of the solar simulator, the back of the substrate is hung in a sliding chute of a solar visual motion track by four limiting wheels, and a visual motion motor is fixed on the side of the substrate; the sight motion motor is meshed with the rack through the gear, the light source points to the circle center of the sun sight motion track, and the sight motion motor and the light source are powered by the button cell.

3. The solar visual motion teaching demonstration instrument according to claim 1, wherein a circular through hole is further provided in the middle of the ground plane, a transparent seat is provided at the bottom side of the circular through hole, and the transparent seat is fixed on the support seat; an equatorial sundial is arranged in the circular through hole, the sundial is locked on the rotating rod in a detachable mode, and the end face of the sundial is always parallel to the solar visual motion track surface.

4. The solar visual motion teaching demonstration instrument according to claim 1, wherein the surface of the ground plane board is further provided with limit strips along the north-south direction, and convex slots for inserting an guy list are formed between the limit strips; the square meter, its square portion and bottom plate form the convex strip block, its table portion is set up in the middle of square portion vertically; the guy part is a magnetic plate and is matched with two magnetic blocks for marking spring, summer, autumn and winter.

5. The solar visual motion teaching demonstration instrument according to claim 3, wherein a hollow turntable is provided on the top side of the support base, and the transparent base is fixed by the hollow turntable through four screws.

6. The sun vision movement teaching demonstration instrument according to claim 3, wherein a flat part is arranged on the part, located on the circular through hole, of the rotating rod, the plane of the flat part is perpendicular to the date comparison plate, and the width of the flat part is equal to the diameter of a sundial; a sundial needle of the sundial is inserted into the magnetic ring, the magnetic ring is fixed on the end face of the sundial, and the sundial is adsorbed on the flat part through the magnetic ring.