At 5:24 on March 21, Beijing timeWe have ushered in the "Spring Equinox" solar term As a spring "C position" solar term that bisects the color of spring How is the vernal equinox determined?
Is it a period of time or a moment?
Why is there the custom of laying eggs?
Collect this "Learning Note" quickly!
See the solar term! The vernal equinox "six feet six inches six minutes"Gui watch is one of the earliest timers in the world As early as the pre Qin period The ancients based on the length of the shadow on the gnomon Quantization time Confirm the 24 Solar Terms
The discovery of the ancient observatory in Beijing from the observation of the gnomonThe shadow length of the vernal equinox is six feet six inches six minutes The longest shadow length during the winter solstice is It's one foot five feet nine inches The shortest shadow length during the summer solstice is It is two feet and three inches
The ancients were the first to use the Guibiao to measure shadowsConfirm the winter solstice and summer solstice After a split, you get four hours Divide and confirm eight sections equally Each trisection confirms 24 Qi It is divided into twelve middle qi and twelve solar terms In modern times, it is collectively known as the 24 Solar Terms The vernal equinox also comes from this When does the vernal equinox arrive? The Sun Theory is determined by TA Through continuous astronomical and meteorological observations Later generations incorporated solar observations into the calendar [P] was first adopted in the Shi Xian Calendar. The spatial method is used to divide the 24 solar terms
Modern astronomy[P] in space. Divide the path of the sun into 24 segments of the ecliptic Every 15 degrees of movement of the sun is a solar term
Qi Rui, deputy curator of the Beijing Astronomical Observatory, introducedWhen the sun "walks" to the intersection of the ecliptic and the equator It means entering the vernal equinox The vernal equinox is a point in time in astronomy
At the vernal equinoxThe sun shines directly on the equator Equal amounts of light and heat were obtained in the northern and southern hemispheres Vernal Equinox Day The sun rises due east and sets due west Day and night are divided equally
Laying eggs, eating spring vegetables, and sending spring cattleThe vernal equinox turns out to be so interesting The 24 solar terms are the Chinese philosophy of time Spring Equinox Approaches Spring Farming Busy The spring equinox is the beginning of warmth People also circulate Many customs such as sending spring cows and eating spring vegetables But why should an egg be erected at the vernal equinox?
School of Social Sciences, Beijing Normal UniversityIntroduction by Xiao Fang, Director of the Department of Anthropology and Folklore In fact, eggs can be erected in all seasons The Spring Separation Egg embodies the idea of conforming to the times It is a manifestation of harmony between man and nature
Spring has arrived, and the flowers have openedMay you live a long time and love Source: CCTV News Client Process editor: TF060