The scientific truth contained in the first frost solar terms

The scientific principles contained in the first frost solar terms are as follows:

The first frost is the eighteenth of the twenty-four solar terms. The first frost is around 10 every year1October 23rd, that is, the longitude of the sun is 2 10 degrees. "First frost" is a traditional solar term in China, which means that the weather is getting colder and the first frost appears, and it is also the last solar term in autumn. "Twenty-four solar terms" said about the first frost: "In mid-September, the gas is cold and condensed, and the dew is frost."

At this time, there has been frost in the Yellow River Basin of China, and a silver ice crystal is shining in the fields thousands of miles away, and the leaves are yellow and withered. The first frost also means the beginning of winter. Health care is particularly important in the first frost season. There is a folk proverb that "it is better to make up the first frost one year", which shows the influence of this solar term on us. The folklore of the first frost varies from place to place.

The first frost is a transitional solar term from autumn to winter. At night, the ground radiates heat very quickly, and the temperature can suddenly drop below 0℃. Water vapor in the air directly condenses into ice needles on the ground or near-earth plants, and some become hexagonal frost flowers with white color and loose structure. Frost can only form on sunny days. People say that "thick frost is bad for the sun" is the truth.

The solar term of the first frost means that the weather is getting colder and first frost begins. The average temperature in the northeast, eastern Inner Mongolia and most of the northwest has been below 0℃, the soil has frozen, and the winter crops have stopped growing and entered the wintering period. To the south of latitude, the average temperature is around 16℃, and there are two or three solar terms before the first frost day.

In the southern valley of South China, frost can only be seen in the dead of winter. Of course, even at the same latitude, the temperature and humidity of the air near the stratum are different because of the different altitude and topography, and the first frost period and frost day are also different.

Folk traditional customs in The First Frost;

1, eat persimmons in the first frost.

In some parts of our country, people eat red persimmons in the first frost season. In the eyes of local people, it can not only keep out the cold and keep warm, but also nourish the bones and muscles. This is a good first frost food. The old man in Quanzhou said that the first frost eats persimmons: the first frost eats persimmons, and the nose will not flow. In some places, the explanation of this custom is that the first frost will eat shuttlecock on this day, otherwise his lips will crack all winter.

Persimmons are delicious, but be careful not to eat them on an empty stomach; Eat in moderation, preferably not more than100g each time; Don't eat immature persimmons; People with low stomach function such as diabetes, chronic gastritis, delayed emptying and dyspepsia are not suitable for eating.

The first frost climbed high.

In the first frost, there is a custom of climbing high and overlooking. Mountain climbing can not only make your lungs comfortable, but also make you feel relaxed and relaxed. The sky is high and the clouds are light, and the maple leaves are all dyed. Feast for the eyes, feast for the eyes, but also pay attention to it.

Climbing time should avoid the morning and evening when the temperature is low. When climbing a mountain, walk calmly and slowly to prevent sprained waist and legs; Don't walk too fast when going downhill, so as not to hurt your knees or pull your muscles. In the process of climbing, we should adapt to the change of temperature by increasing or decreasing clothes; When resting, don't sit on the wet ground and at the tuyere; You can loosen the button a little when you sweat. Don't take off your clothes, take off your hat, lest you catch cold.