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Product Name: KX1002 The Big Dipper

Product code: KX1002 The Big Dipper
Size: 160*125*140mm
Weight: About 80g
Material: EVA + terminal wire + bulb + battery box + double-sided tape...
Color: Black
Is the device powered by batteries? Yes.
Packing: 200 pcs
Box Specification: 600*450*550mm

The Big Dipper, also known as the "Big Saucepan" in China, holds a very important position in traditional Chinese culture and is considered a very significant constellation. The Big Dipper, as its name suggests, consists of seven different stars that form a spoon-like shape, located near the north. The ancient Chinese observed the sky and found its shape similar to a "water pot," hence the name "Big Dipper." The seven stars are named respectively: Tianshu, Tianxuan, Tianji, Tianquan, Yuheng, Kaiyang, and Yaoguang. At different seasons and times of the night, they appear in different directions in the sky, so the ancients used the direction of the handle at dusk to determine the season: when the handle points east, the world is spring; when the handle points south, the world is summer; when the handle points west, the world is autumn; when the handle points north, the world is winter.

Experimental Purpose:
1. Recognize the Big Dipper in the constellation.
2. Preliminary understanding of astronomical knowledge.

Principle Application:
Shadow and Projection

Installation Step Diagram:

Next to the Kaiyang Star and Yaoguang Star, there are another two smaller stars, which are less luminous and therefore not particularly noticeable. The one on the left is known as Zuofu, and the one on the right is called Youpi.

The Big Dipper is composed of the seven stars: Tianzhu, Tianxuan, Tianji, Tianquan, Yuheng, Kaiyang, and Yaoguang. The ancient Han people imagined these seven stars as a dipper shape used for pouring wine in ancient times.
The stars Pi, Eta, Theta, and Iota form the body of the Big Dipper, known as Kui in ancient times.
The Yuheng, Kaiyang, and Yaoguang constitute the handle of the Big Dipper, which was known in ancient times as the spoon.

The Big Dipper appears in the sky at different positions at different times of the day and seasons, so the ancients decided the seasons based on the direction of the handle at dusk: when the handle points east, the world is spring; when the handle points south, the world is summer; when the handle points west, the world is autumn; when the handle points north, the world is winter.
The Big Dipper starts at the tip of the handle and ends at the end of the handle. In order, they are named alpha, beta, gamma, delta, epsilon, zeta, and eta. The ancient Chinese Han astronomers respectively called them: Tianshu, Tianxuan, Tianji, Tianquan, Yuheng, Kaiyang, and Yaoguang. Extend a straight line from "Tianxuan" through "Tianshu" and extend it about 5 times more, and you can see a star as bright as the Big Dipper, which is Polaris.

The Big Dipper is part of the Ursa Major constellation, and from the shape, the Big Dipper is located at the tail of the bear. Among these seven stars, six are second-magnitude stars, and one is a third-magnitude star. By connecting the two stars at the mouth of the dipper and extending it about five times as far, you can find the North Star. There is a star song: "Recognizing stars starts from the Big Dipper, and then expands westward from the north." Beginners can find other constellations by following the Big Dipper stars in turn. The seven stars in the spoon shape in Ursa Major. The ancients attached great importance to the Big Dipper because they could use it to identify directions and set the seasons.

The four stars, Tianzhu, Tianxuan, Tianji, and Tianquan, form the "drum" of the Big Dipper, with the four stars at the tip forming the "handle". The handle consists of the stars Yueheng, Kaiyang, and Yaoguang. The central star in the handle is called Kaiyang, and 11 minutes away from it is a fourth-magnitude companion star named "Fuxu". Kaiyang and Fuxu form an optical binary, which can be identified with the naked eye. Kaiyang and Fuxu are also the most visible physical binary in the night sky.

The position of the Big Dipper in the night sky varies during the first half of the night depending on the season. Therefore, the ancient Chinese people used its position to determine the season. "The Book of the Star" states: "The Big Dipper is known as the Seven Regulators, the lords of heaven, and also the imperial carriage." The emperor inspected the four directions and set the four seasons and divided the cold and hot seasons while sitting in the Big Dipper. The ancient book "The Hat of the Crows" records: "When the handle of the Big Dipper points east, the world is spring; when the handle points south, the world is summer; when the handle points west, the world is autumn; when the handle points north, the world is winter." In ancient times, the North Star was regarded as a symbol of God, and the Big Dipper was the imperial carriage driven by God when he inspected the world. The year begins with spring, and at this time, the Big Dipper is in the east, so God begins his inspection from the east, so "The Book of Changes" states: "God comes out of the shock." The shock is in the east. [1]"
In the Big Dipper, the star 'Yueheng' is bright, almost as bright as a first-magnitude star. 'Tianquan' is dim, a third-magnitude star. The other five are all second-magnitude stars. There is a very small companion star near 'Kaiyang'.

The star named 'Fuj' has always attracted people's attention with its beautiful and clear appearance. It is said that in ancient times, when the Arabs recruited soldiers, it was used as a 'test star' to measure the vision of soldiers.
The Big Dipper always moves slowly in the sky. Five of its stars move in roughly the same direction, while "Dizhi" and "Yaoguang" move in the opposite direction. Therefore, over the long course of cosmic changes, the shape of the Big Dipper will undergo significant changes. In 100,000 years, we will no longer be able to see this handle-and-bowl shape.
The Big Dipper, also known as the "Big Dipper," is a group of seven bright stars not far from the North Celestial Pole, arranged in the shape of a dipper (see the picture). Except for the Delta (Epsilon Ursae Majoris) star, which is a third-magnitude star, the other six stars are second-magnitude stars. By connecting the two front stars of the Big Dipper and extending about five times the distance towards the mouth of the dipper, you can find the North Star, which is often used as a marker for direction and for identifying constellations. In addition, following the curve of the handle of the Big Dipper and drawing an arc, you will encounter the Alpha star of the Big Dipper, which is the constellation of the Herdsman, which contains 21 bright stars.

Zhejiang Jianyi Education Technology Co., Ltd.
Zhejiang Jianyi Education Technology Co., Ltd. (formerly Yifei Toy Factory)Established in 2007, the current brand is "XING TEACHER" and "JIAN YI". Over the past 10 years, our company has made unremitting efforts to make the enterprise gradually mature. Our company is a member of the Teaching Equipment Industry Association of the Ministry of Education, and is a leading enterprise in Zhejiang Province. The company has been awarded the "Heavy Contract and Credit-Keeping" unit for three consecutive years by Jinhua City. In 2014, it was awarded the "Advanced Collective of Jinhua Teaching Instrument Industry" by Zhejiang Province.
Zhejiang Jianyi Education Technology Co., Ltd. is a high-tech enterprise that integrates modern scientific research and development of educational equipment, curriculum design, teaching resource integration, and technical services. Zhejiang Jianyi Education Technology Co., Ltd., with high-tech products and modern educational equipment, has established itself in the education industry. Our products are sold all over the country and have been exported to Europe, America, Japan, and South Korea. After years of accumulation, the company has begun to take shape. In terms of technological innovation, the company has professional design personnel engaged in the research and development of complete sets of educational products and the upgrade of existing products; in production, management, and installation services, the company strictly implements the ISO9001 international quality assurance system standards; in marketing, the "Xing Teacher" products have been introduced into many provinces and cities in the country and enjoy a good reputation; for many years, it has provided high-quality, advanced, professional series of modern teaching equipment and professional equipment research and development custom services for the education industry. With excellent, high-quality professionals and perfect after-sales service quality, the company has established a good corporate image.Xing teacher's" series of science and education physics, chemistry, photovoltaic, wind energy, geography, biology, art, and so on, has successfully won bids in the education bureau tenders multiple times. Zhejiang Jianyi Education Technology Co., Ltd. continues to adhere to the business philosophy of "quality first, service to diligence, honesty in character," and upholds the "Xing teacher" culture, casts the "Xing teacher" brand, and creates the development policy of the "Xing teacher" career. We provide excellent equipment and high-quality services for school teaching and scientific research. We are willing to cooperate sincerely with new and old friends at home and abroad, work together, and devote our efforts to education and education.

  Before assembling, please check if the circuit is unblocked and all the components are complete. Ensure that all contact points are in good contact. During the assembly process, be careful not to get glue on your clothes or skin. Keep the parts out of reach of younger siblings to prevent them from swallowing them by mistake! Do not play with them on your head, to avoid the model falling and injuring you!