Title: Mathematical knowledge in the 24 solar terms
I. Definition of solar terms
Twenty-four solar terms refer to 24 specific solar terms in the China lunar calendar, including the vernal equinox, summer solstice, autumn equinox and winter solstice. These solar terms are determined according to the position of the sun on the ecliptic, reflecting the periodic and seasonal changes of the earth's revolution around the sun.
Second, mathematics knowledge points
1. Calculation of solar ecliptic
The solar ecliptic refers to the longitude of the sun on the ecliptic, which is the theoretical basis of the 24 solar terms. In ancient China, the position of the sun on the ecliptic was determined by observing the position of the sun, and the specific date of each solar term was determined by mathematical calculation.
2. Angle and time conversion
In the twenty-four solar terms, there is a certain relationship between the sun's longitude angle and the specific date. Through mathematical calculation and transformation, the specific date and time of each solar term can be determined.
3. Geometry and astronomy
Geometry and astronomy also played an important role in the formulation of the 24 solar terms. By observing and measuring the position and motion law of the sun, people can calculate the specific date and time of each solar term.
Third, the case analysis
Take the vernal equinox as an example. The vernal equinox refers to the solar term of 360 degrees, which is also the midpoint of spring. Through mathematical calculation, we can determine that the vernal equinox is on March 20th or March 2nd1day every year. On this date, people on the earth feel the changes of rising temperature, longer days and shorter nights.
IV. Conclusion
Twenty-four solar terms are one of the heritages of ancient science and culture in China, which contains rich mathematical knowledge. By understanding and exploring these mathematical knowledge, we can better understand and apply these solar terms, which is of great help to our lives.
The above is a simple tabloid sample. By introducing the mathematical knowledge points and application examples in the 24 solar terms, readers can better understand and apply these knowledge points. If you want to make a tabloid, you can follow the following steps:
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