The origin of vernal equinox egg

? I want to clarify this problem from three aspects, plus an extension-

First, what is the vernal equinox egg? The vernal equinox egg is also called the vernal equinox vertical egg, which refers to the popular "vertical egg game" on the vernal equinox, one of the 24 solar terms. This upright egg doesn't stand upright like Copernicus broke the egg, but it must remain upright without breaking it.

Second, the origin of spring eggs? About the origin of dividing eggs in spring, the historical record is relatively simple, only saying that the custom of "dividing eggs in spring" originated four thousand years ago, when people celebrated the arrival of spring with this activity. This record shows the following points: first, it shows that this origin is very early, in the Xia Dynasty 4000 years ago. Second, it shows that the wisdom of our people was very developed 4000 years ago. You know, the Xia Dynasty was the first dynasty in China, and the time of spawning was chosen at the vernal equinox at that time, which was quite remarkable. Why do you say that? Please continue reading the following.

? Third, the scientific basis for egg distribution in spring? In ancient times, China summed up the truth that "when the vernal equinox arrives, all eggs look good". The so-called "coincidence" means that the egg is easy to stand up on this day, and it is even more difficult at other times. Bread here contains scientific truth.

? According to modern research, the vernal equinox is a day with the same length of day and night in the northern and southern hemispheres, and the inclination of the earth's axis of 66.5 is in a relatively balanced state with the orbital plane of the earth around the sun, which is beneficial to vertical eggs.

? More importantly, the surface of the egg is uneven, and there are many things protruding like "hills". According to research, the height of the "mountain" is about 0.03 mm, and the distance between the peaks is between 0.5 and 0.8 mm. According to the principle that three points form a triangle and determine a plane, as long as we find the triangle formed by the three "mountains" and make the center of gravity of the egg pass through this triangle, then the egg can stand upright.

? In addition, it is best to choose eggs 4 ~ 5 days after birth, because the yolk of the egg is slack at this time, which can make the yolk sink when it is upright, while the center of gravity of the egg drops, which is conducive to the egg's standing.

Fourth, what is the impact of egg separation in spring? Originally a traditional game in China, or the custom of vernal equinox, it has now become a worldwide game. On the vernal equinox, many people in the world are playing this game.

? It is reported that at the spring equinox of 1985, Gray, an art professor at the University of Alaska, and his students put 24 eggs in a room.

? Please try to lay eggs at the vernal equinox! To tell you a secret, please pay attention to two points: first, pay attention to the "mountain" when the egg stands upright, and you can find a "triangle" composed of three "mountains"; Second, be sure to let the yolk sink until it just moves to the bottom shell.