What is the custom of "standing on eggs at the spring equinox"?

The spring equinox is one of the twenty-four solar terms, and with temperatures gradually rising, many places are warming up.

Ancient China categorized the spring equinox into three seasons: "The first is the arrival of the bird, the second is the sound of thunder, and the third is the beginning of electricity. Here "Xuanbird" refers to swallows, which start to fly back from the south when the spring equinox comes, and when it rains, the sky will thunder and send out lightning. In addition, the flowers represented by the three equinoxes are: "Begonia, Pear, and Magnolia."

"Eggs on the Spring Equinox" is a custom to celebrate the arrival of spring. Here's some information:

? First, the spring equinox egg custom origin?

Spring Equinox Eggs" is a traditional folk custom in China, according to historical records, the Spring Equinox Eggs tradition originated in the great China 4,000 years ago to celebrate the arrival of spring. In fact, the standing egg is not related to the spring equinox, it is to make the center of gravity of the egg must be lower than the center of the egg maximum circumference of the curve position. In the old legend, it is easiest to stand the egg on the spring equinox. In fact, the "Spring Equinox Egg Standing" is a custom to celebrate the arrival of spring. This Chinese custom has long been spread abroad and has become a "world game".　　

There is also a meaning to erecting eggs, spring is here, everything is restless, erecting eggs is a good way to remind people to always keep a good mind, peace of mind. In addition to the original meaning of the "vertical egg" to stand the egg, but also "immediately", "add Ding" meaning that people pray for prosperity, the meaning of the generations.

The most fun custom on the day of the Spring Equinox is to "set up an egg": choose a smooth, well-proportioned egg that has just been laid for four or five days, and put it up on the table with a light hand and a light foot. "Spring equinox to, the egg is pretty", in the spring equinox every year, many places in China to hold "vertical egg" games or competitions.

? The first is the principle of the Spring Equinox Eggs.

Principle one: On the day of the spring equinox, the northern and southern hemispheres are equally divided between day and night, and the Earth's axis tilted at 66.5 degrees and the Earth's orbital plane revolving around the Sun are in a state of relative equilibrium of the force, and at the same time, the Earth's magnetic field is relatively balanced, so the egg is the best to stand up.　

Principle two: There are many protrusions on the eggshell that are about 0.03 millimeters high, and three of these protrusions can form a triangular plane, so that if the egg's center of gravity passes through the triangle, it can be realized as a "vertical egg".

? Third, the spring equinox egg method?

Method 1: Pick the eggs?

First of all, you have to pick an egg with a big head and a small head, and put the big head down when you set up the egg, so that the center of gravity will be relatively low, just like a tumbler, it is easy to maintain balance.　

Method 2: Find a support surface?

Find the right support surface, we did a small experiment, on the tabletop coated with Indian mud, and then the eggs stand on the tabletop coated with Indian mud, you can find that the eggs that can stand, the bottom will have a plane that is hard to see with the naked eye, once the line of action of gravity can pass through the plane, the eggs will be able to stand up.?　

Method 3: A steady hand?

Because the position of the yolk in a raw egg also affects how the egg stands, the hand that stands the egg should try to stay still so that the yolk can slowly settle into the lower part of the egg, so that the center of gravity can be low enough to keep the egg balanced.

? Fourth, the spring equinox standing egg play?

"Eggs" game play is really simple and fun: choose a smooth and proportionate, just laid four or five days of fresh eggs, gently on the table to put it up. There were many failures, but also many successes. The spring equinox is the best time for the egg-erection game, so there is a saying that "when the spring equinox comes, the egg is pretty". The eggs that are erected are very beautiful.

Based on experience, should be so "spring equinox vertical egg": the surface of the egg is in fact uneven, there are many protruding "hill", "mountain" height of 0.03mm About, the distance between the peaks in 0.5 mm ~ 0.8 mm. According to the three points to determine a plane of reason, as long as you find three suitable "hill" pivot point, you can make the egg stand up.

In addition, 4 to 5 days after the birth of the egg, due to the yolk pigment band relaxation, yolk sinking, the center of gravity down, more conducive to the erection of the egg.

? Fifth, the foreign story of the standing egg?

The vertical egg not only has many scientific reasons, but also contains a lot of rich and profound philosophical ideas. The famous Italian navigator Christopher Columbus crossed the vast Atlantic Ocean and discovered the New World of the Americas, some people do not think of its discovery, and even ridiculed it as "purely accidental". In a celebratory meeting, Columbus proposed that the banquet of ladies and gentlemen to try, can you put the eggs on the table stand up, the result is that none of the success. Columbus said, watch me perform. He cracked the egg down, the shell broke and the egg stood up. Then he said, this is what I have discovered, very easy indeed, but why won't you?　

The egg's smooth curves are what make it so difficult to stand up, and that's what makes it so fascinating. The famous European Renaissance painter Leonardo da Vinci, had been sleepless for more than two years, practicing every day to draw the curve of the egg, which for his later success in shaping the Mona Lisa's mysterious smile to lay a solid foundation. China's folk face called "face", and the egg shape as the face of the standard of beauty or not, fully explains our people's high level of aesthetic appreciation and the aesthetic properties of the egg shape.　

But, for a long time, people have not been able to find the mathematical expression for the egg-shaped curve, and even mathematicians can only approximate the egg curve by virtue of a straightedge and compass. No wonder even painters who have drawn thousands of egg circles say that no two are exactly alike.

The equinox is one of the "four times eight sections", its importance is undoubtedly, along with many other customs need to be observed, the equinox marks the halfway point of spring, the temperature and precipitation are gradually increasing, at this time, people should be more fresh air, more exercise, to feel the beautiful spring, both to maintain health and can make the mood more comfortable. Can health and can make the mood comfortable, so as to live up to the beautiful spring.