Seventeen-hole bridge reappears "golden light piercing the hole" in winter solstice

Seventeen-hole bridge reappears "golden light piercing the hole" in winter solstice

The 17-hole bridge reappears in the winter solstice, and the setting sun shines on the earth. The east side of the 17-hole bridge is covered by the sunset to the greatest extent, so in the winter solstice season, the spectacle of golden light piercing the hole is formed. Seventeen-hole bridge reappears "golden light piercing holes" in winter solstice.

17-hole bridge reappears "golden light pierces the hole" in winter solstice 1 Every winter solstice, the afterglow of the sunset shines on the bridge opening side wall of 17-hole bridge, and the golden sunset illuminates bridge opening, just like the bridge opening is full of bright lights. People call this phenomenon "golden light pierces holes".

The staff of the Summer Palace Research Office introduced that the phenomenon of "golden light piercing the hole" is a natural phenomenon, more like a "beautiful coincidence". Every winter, around the day, the height angle of the sun in the northern hemisphere is the smallest, and sunlight can reach areas that can't be irradiated at ordinary times. In winter, at about 4: 00 p.m. every day from the day before to the month after, light and shadow will illuminate the wall of bridge opening, and a bridge with 17 holes will have the beautiful scenery of "golden light piercing the hole".

This year1October 26th 165438+ to February 30th, 65438+ the Summer Palace closed Nanhu Island and the 17-hole bridge area. Even if you can't board Nanhu Island and Seventeen-hole Bridge, visitors can watch the "Golden Light Piercing" along the east embankment north of Tongniu. In addition, the Summer Palace, promenade, stone boat, Xidi Six Bridges and other ancient buildings will be built in winter.

In addition, the Summer Palace also used 5G technology to broadcast the whole process of "golden light drilling" live on more than 30 online platforms, and the official Weibo of the Summer Palace broadcasted it slowly for 9 consecutive days. There is also a golden light puncture photography exhibition on the extension line of the East dike.

Seventeen-hole bridge reappears the phenomenon of "golden light piercing holes" in winter solstice. The phenomenon of "golden light passing through the hole" of the 17-hole bridge in the Summer Palace is closely related to the different seasons, directions and angles of sunset and sunrise.

During the vernal equinox and autumnal equinox, in March and September, due to direct sunlight on the equator, the global sunrise direction is due to sunrise in the east and sunset in the west. In the morning, the direction of the sun is due east, and the place where the sun sets is due west.

From the vernal equinox to the summer solstice, with the passage of time, that is, from March to June, the sunrise direction gradually deviates to the north, reaching the maximum northeast corner deviation direction in the summer solstice season, and also at sunset, heading to the north-west direction; The sun moves the longest in the sky.

At this time, the angle of sunlight hitting the earth gradually deviates to the vertical direction. In the summer solstice, the sun shines the shortest shadow on the object, because the angle of sunlight hitting the earth is nearly 90 degrees, that is, it shines from the top of the head, and it feels very hot.

During the autumnal equinox and winter solstice, the sunrise direction gradually turns from due east to southeast, and gradually turns from due west to south at sunset.

During the winter solstice, the direction reaches its maximum in the southeast at sunrise and in the southwest at sunset. At this time, the angle of the sun shining on the earth is oblique, which is different from the vertical illumination from the summer solstice. At this time, you will find that the shadow of the sun on the object has also become longer.

Therefore, during the winter solstice, the sunrise in Beijing is in the southeast and the sunset is in the southwest.

Because in winter solstice season, sunset is the southernmost, at this time, the position of the sun is closest to the direct angle with the bridge body of the 17-hole bridge, but it is not direct, and there are still some angles. In addition, the angle of the sun shining on the earth at this time is oblique, not the direct angle of the head during the summer solstice.

So at this time, the sun is the most southerly and has a certain lateral angle with the bridge body. In addition, the angle at which the sun shines on the earth at this time is the maximum oblique angle. Together, these two factors can make the most sunset sunlight shine on the bridge opening on the east side of 17 bridge opening, and the east side of 17 bridge opening is covered by sunset to the greatest extent, so in the winter solstice season, the spectacle of golden light piercing holes is formed.

The Seventeen-hole Bridge reappears "Golden Perforation" in the winter solstice. Every winter, the afterglow of the sunset just shines on the side walls of all bridge opening of the Seventeen-hole Bridge in the Summer Palace. The golden sunset illuminates bridge opening, and from a distance it looks like the bridge opening is full of bright lights. People call this phenomenon "golden perforation".

The 22nd of this month is the winter solstice solar term. In the evenings these days, there are always many "long guns and short guns" aimed at the 17-hole bridge in the Summer Palace, in order to shoot the beautiful scenery of "golden light piercing holes".

According to the experience summarized by many photographers, the effect of "golden light piercing the hole" can be photographed around 4 pm every winter, lasting about 20 minutes every day. In order to seize the favorable seats, many photographers wait from 1 in the evening, and some even enter the park to occupy seats at 10 in the morning.

In the seventeen holes under the bridge, each one has golden light; In such a royal garden, every once in a while, there will be a magical scene of "golden light piercing holes". Is this the genius of the craftsmen in the Summer Palace? Or is it formed by natural causes?

Earlier, an article on the Internet said that the ancients mastered and applied the knowledge of astronomy and geography when building the 17-hole bridge, which was also a genius of landscape designers, thus praising the craftsmen of the Qing Dynasty for their craftsmanship.

Is that really the case? The staff of the Summer Palace Research Office responded to this reporter's report that this seventeen-span bridge was built during the Qingyi Garden period, spanning between Kuluting and Nanhu Island, and it is the only land bridge leading to Nanhu Island. In order to explain the phenomenon of "golden light piercing the hole", the staff consulted a large number of historical materials, especially those related to bridges and light, but there were no relevant records.

"In fact, this is a beautiful coincidence." The staff said that there is no astronomical principle, but it is just a common landscape, because around the winter solstice, when the height angle of the sun reaches the minimum, its light shows an oblique long light and shadow, which can illuminate areas that cannot be found at ordinary times. From winter to a month or two before and after, you can see the beauty of golden light shining in the hole in the wall.

The staff said that there are many tourists who come to shoot "Golden Light Piercing the Hole" recently, especially when the winter solstice solar term is approaching. Visitors to the Summer Palace and the 17-hole Bridge on Nanhu Island continue to rise, with nearly 700 tourists in the area during the peak hours before sunset.

In order to ensure the safety of ancient buildings and tourists, the Summer Palace set up a 200-meter security cordon at the steep slope from Nanhu Island to Bafangting Scenic Area, and designated personnel at six key positions and four docks to provide safety tips and order maintenance for tourists; Increase the intensity and density of safety inspections along the East Embankment to ensure good order and the safety of tourists; Set up a hard isolation belt of 80 linear meters in the key area of Nanhu Island to protect the stone revetment guardrail and ensure the personal safety of tourists. Next, the park will be dynamically adjusted according to the number of tourists. During the peak hours of tourists, the 17-hole Bridge and Nanhu Island will adopt temporary one-way traffic and local flow restriction measures.

"In addition to the 17 span bridge, there are many ancient buildings in the Summer Palace, which will present a beautiful winter landscape." The staff reminded that in winter, under the glow of sunset glow, the iconic ancient buildings of the Summer Palace, such as the promenade, Zhou Shi and Xidi Sixth Bridge, will also present a different kind of golden beauty, and tourists can also go and watch it as a souvenir.