Can the principle of 202 1 vernal equinox vertical egg go to the grave?
202 1 principle of vertical egg at vernal equinox
The vernal equinox is a day with the same length of day and night in the northern hemisphere and the southern hemisphere. The inclination of the earth's axis is 66.5 degrees, which is in a relatively balanced state with the earth's orbital plane around the sun, which is beneficial to vertical eggs. Actually, laying eggs has nothing to do with the vernal equinox. Whether an egg can stand up depends on the gravity of the earth and the conditions of the egg itself. The vernal equinox has little effect on the gravity of the earth, but the composition of egg yolk has a great effect on the standing of eggs. The sinking of the yolk will lower the center of gravity of the egg, and the eggshell itself is uneven. As long as you find three bumps, the egg can stand up after it is balanced. In fact, although the eggshell is curved, its contact with the desktop is not a point. The curvature of the big end of the eggshell is relatively small, so that for a small area, similar to a plane, this tiny plane is enough as a support point to make the egg stand firm. Someone has done a similar experiment, putting an upright egg on carbon paper and then observing the contact surface between the egg and carbon paper. It was found that the tips of at least three bumps on the eggshell surface were stained with the color of carbon paper, which is what scientists call a tripod. Experts say that in fact, eggs can be erected on any day of the year. Moreover, citizens can try it at home: take a fresh egg, put it on the table head down, carefully find the balance point and let it go until it doesn't fall. Moreover, a stable egg can last for more than ten days without external interference.
Can I go to the grave around the vernal equinox?
You can go to the grave at the vernal equinox. At the vernal equinox, many places in our country will have the custom of sweeping graves to worship ancestors. At the vernal equinox in February, we began to sweep graves to worship our ancestors, also known as the Spring Festival. Before sweeping the grave, a grand ancestor worship ceremony should be held in the ancestral hall, pigs and sheep should be slaughtered, drummers should be invited to play, and the ritual students should read the eulogy and quote three praises. At the beginning of the spring equinox grave sweeping, the first thing is to sweep the graves of ancestors and distant ancestors. The whole family and the whole village have to be dispatched on a large scale, and the team often reaches hundreds or even thousands. After the ancestral graves of Kaiji and Yuanzu were swept, they were divided into rooms to sweep the graves of ancestors in each room, and finally each family swept the graves privately. In most Hakka areas, ancestor worship and grave sweeping in spring begin at the vernal equinox or earlier, and must end in Tomb-Sweeping Day at the latest. There is a saying everywhere that after the Qingming Festival, the tomb door is closed, and the ancestors' spirits are not needed.