It's officially the autumnal equinox today!
The autumnal equinox is the sixteenth of the twenty-four solar terms
It is also the fourth solar term in autumn
Autumnal equinox, "fen" means "equal equinox"
The entire autumn was divided equally, heralding the official start of the second half of autumn
Like the heat season, there is also a little summer heat during the white dew solar term
Then after the autumnal equinox, it is time for the real autumn
The weather is gradually getting cooler, and the temperature difference between day and night is getting bigger!!
This issue of the editor also brings to you
Those autumnal equinox "cold knowledge" that you don't know:
Today's autumnal equinox, the sun is shining directly on the equator
At this time, the North and South Poles share the same day
That is, penguins in Antarctica and polar bears in the Arctic
The sun can be seen at the same time
In addition, because the direct point of the sun shines impartially on the equator
When you come to the equatorial line
You will find that no object can find its own shadow
In addition, the biggest sign of autumn is probably the yellowing of the leaves
Many people wonder why the leaves turn yellow in autumn?
Autumn begins, the hours of sunshine are shortened and the temperature drops
The chlorophyll in the leaves begins to break down and disappear
But there is already in the leaves
Lutein, anthocyanins and other pigments are not afraid of low temperatures
So, when the temperature drops, they show their true colors
This is why the leaves of some trees turn yellow in autumn
On the day of the autumnal equinox, there is also a special phenomenon
At 45 degrees north latitude, the height is as long as the shadow
That is, we don't have to climb high
You only need to measure the length of the shadow to know the height of the building
Doesn't it feel amazing
So, friends who are on the 45th parallel today
Hurry up and measure the shadow and try it!!
Finally, there is a special custom during the autumnal equinox
- Vertical eggs
It is said that on the day of the autumnal equinox, eggs stand up easily
According to historical records
The tradition of erecting eggs at the autumnal equinox originated in China 4,000 years ago
If the egg is successful, it also indicates good luck and good luck
You can also try it today~
Okay~ Autumn equinox "cold knowledge" is about this!
From today the weather will get colder
Don't forget to keep warm and healthy~
Follow the new vision of sunshine to open up a new way of healthy living
Learn more about health and wellness tips!
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