How is the double rainbow formed?

Double rainbow is a special phenomenon formed after two reflections in water droplets. A concentric rainbow with a slightly larger diameter and reversed color appears on the periphery of the original rainbow. The inside rainbow is called the main rainbow, the outside is red, the inside is blue, and the color is bright. The outer rainbow is called a sub-rainbow, the outer side is blue, the inner side is red, the color is dark, and it looks like a hair band. Come and have a look with me next.

The formation of double rainbows:

Many times, two rainbows will appear at the same time, and a concentric but darker secondary rainbow (also called neon) will appear outside the ordinary rainbow. The secondary rainbow is formed by two reflections of sunlight in water droplets. When sunlight passes through water droplets, it will be refracted, reflected and then refracted again. The light reflected once in the water drops forms our common rainbow (main rainbow). If light is reflected twice in a water drop, a second rainbow (neon) will be produced.

The color arrangement of neon is opposite to that of the main rainbow. Because every reflection will lose some light energy, the brightness of neon lights is also very weak. The strongest reflection angle of the two reflections appears at 50? To 53? , so the position of the auxiliary rainbow is outside the main rainbow. Because there are two reflections, the color sequence of the auxiliary rainbow is opposite to that of the main rainbow, with the outer side being blue and the inner side being red. In fact, the auxiliary rainbow must follow the main rainbow, but sometimes it is invisible to the naked eye because of the low light intensity.

Double rainbow case:

Beijing, China

A rare double rainbow appears in Beijing, China, praying for the candidates of the college entrance examination.

The day before the college entrance examination, there was a hearty rain in Beijing, with an average of 20.5 mm in the city and a maximum rainfall of 47.0 mm in Yanqing Badaling. After the rain, the sky turned from cloudy to sunny, and there were clouds and light in the clouds. At night, many people saw the rainbow, some saw short and wide rainbow segments, and some saw double rainbows. Bless Beijing candidates who will take the college entrance examination tomorrow.

China Maoming

A double rainbow appeared in Maoming City, Guangdong Province, China.

On May 14 and 17, after a short thunderstorm, a double rainbow appeared in Maoming, which made this industrial city more psychedelic, especially before the college entrance examination. Is this fantastic scene a blessing for Maoming candidates? Local college students once photographed a precious scene at that time.

Changchun, China

There is a double rainbow in Changchun City, Jilin Province, China.

20 14, 14 On May 3rd, after a rainstorm, a rare double rainbow landscape appeared in Changchun, which surprised many citizens. It is colorful and attractive, as attractive as ink painting. Photographer Yang Zhongwei took this scene in time, which is very precious.

Australia

There are double rainbows in Bellarine Peninsula, Australia.

2011165438+1On October 27th, 57-year-old photographer phil thompson took an incredible photo, showing a rare double rainbow reflected from the sea. This photo was taken in Bellarin Peninsula, Victoria, Australia. At that time, the sea not only reflected the rainbow, but also reflected the rainbow. Split in two? . The two rainbows have different angles, as if they were shot from the sea, and the scene is amazing.

This kind? Reflect the rainbow? Because of raindrops, sunlight will be reflected by the water surface before it deviates. In contrast,? Reflect the rainbow? More commonly, raindrops are deflected before sunlight is reflected in water. ? Reflect the rainbow? This is a very rare phenomenon, and Thompson was very lucky to capture this scene. This phenomenon will only occur when all conditions are met, such as wide water surface, calm and close to rain curtain. Les Covelli of the atmospheric optics website said:? Phil captured a very rare and beautiful rainbow effect. ?

Switzerland

Two rainbows appear in Zermatt, Switzerland

2011On August 24th, at 0: 35 Beijing time, a beautiful double rainbow appeared in Zermatt, Switzerland.

The great wall of China

There are two rainbows on the Great Wall of China.

On July 6th, 20 10, at 3pm, the founder (real name) of China took his disciple Wen to the Great Wall. At first, it was sunny and clear in Wan Li, then it was rainy, and then it was a double rainbow spectacle.

Yushu in China

There are double rainbows in Yushu, China.

20 12 On August 25th, a double rainbow appeared on the grassland not far from the local National Day Primary School in Yushu Tibetan Autonomous Prefecture, Qinghai Province, China. At that time, suddenly dark clouds were gathering, followed by strong winds and heavy rain. After a while, two very clear and beautiful rainbows appeared in the sky for half an hour. At that time, volunteers from all over the country who participated in the grassland music festival raised their cameras to shoot. According to the local people, this kind of double rainbow is rare every year and is regarded as a symbol of good luck by them.

China Taiyuan

Taiyuan, China is now a double rainbow.

On September 20 12 13, it suddenly rained for a while in Taiyuan city, Shanxi province, China? Sun rain? Two rainbows appeared in the sky after the rain.

Hubei, China

China and Hubei are now double rainbows.

A gorgeous rainbow spans the horizon of Ya Bu reservoir area in Qingjiang River. After the heavy rain, colorful rosy clouds bloomed over Shuibuya, and rows of new houses were clearly visible in the mist. The dazzling aura makes Shuibuya more beautiful and mysterious after water storage. At about 17 on July 30th, 2007, many people witnessed this rare event? Sky arc? Scenery, rare? Double rainbow? It also passed in an instant, and the strange scene lasted for more than 20 minutes before it gradually faded away.

It is understood that the appearance of rainbow is affected by the recent heavy rain, and the atmospheric water content is high. After the sky clears up in the afternoon, the air is transparent, and this natural phenomenon appears under the refraction of sunlight. And then what? Double rainbow? Because there are two clouds in the sky, there are two rainbows, one big and one small.

Qingjiang Ya Bu Reservoir Area is located in Badong County, Hubei Province.

Badong is located in the middle of the Three Gorges of the Yangtze River, with magnificent mountains and rivers and numerous historical sites. It is a famous international tourist resort along the Yangtze River, Shennongxi, also known as Yandu River, which originated in the southern foot of Shennongjia and has a total length of 60 kilometers. It flows into the Yangtze River from north to south at the slope of Xinyakou, 2.5 kilometers away from Wuxia.

Sichuan, China

China Sichuan Lugu Lake Double Rainbow

At 20 12 and 16, there was a solar rain near Dazui Island in Lugu Lake, followed by a double rainbow, lasting about 10 minutes.

Wuzhou, China

Double Rainbow, Wuzhou City, Guangxi, China

On July 9, 20 13, 18, the calm Wuzhou was washed away by violent solar rain, and two rainbows appeared in the east at the same time, which was particularly clear.

China Yunhe

Double Rainbow in Yunhe County, Zhejiang Province, China

20 12 on July 24th, it rained in parts of Yunhe county, with rain in sunny days. In the evening, around 18, it appeared over the toy wisdom garden scenic spot in the south of China wooden toy city? Double rainbow? Phenomenon, and the colors of the two rainbows are just the opposite, the upper one is lighter and the lower one is rich in color. But in a very short time, a double rainbow? It disappeared.

On the evening of July 9, 2065438+03, after the sun and rain, a double rainbow appeared in the area north of the east of the city. The rainbow lasted for more than ten minutes, and then gradually disappeared.

Chenzhou, China

Shuangcaihong, Chenzhou City, Hunan Province, China

On July 8, 20 13, there was a solar rain in the urban area, and then a double rainbow appeared in the western sky, which attracted citizens to take pictures with cameras. The rainbow is semi-circular, but meeting a double rainbow means perfection.

On July 1 10 and 17, 2065438, after a solar rain, a double rainbow appeared in Tiandong County, Guangxi, which lasted for a long time until sunset.

On August 7, 20 13, a double rainbow appeared in Guanlan, Shenzhen.

On August 7th, 20 13, a double rainbow appeared in jinzhou area, Nansha District, Guangzhou.

2013 August 1 1 A double rainbow appeared in the paper mill in Jiangxia District, Wuhan.

On the evening of August 26th, 2003 18: 30, a double rainbow appeared beside Yandun Town, Lingshan Town, Qinzhou City, Guangxi. Suddenly there was a solar rain, and two rainbows appeared in the sky at the same time after the rain, which was particularly clear.

20 13 10 10. Surprise over Huangshan Scenic Area at 7: 00 am on October 3? Double rainbow? The rainbow on the inside is gorgeous, and the rainbow on the outside is like a halo. The color is lighter but it sets each other off. The magical natural landscape makes Chinese and foreign tourists feast their eyes.

Haikou, China

A double rainbow appeared in Haikou, China.

On June 6, 20 14, at 6 o'clock in the afternoon, a thunderstorm suddenly began to fall in the sky. After the rain stopped, a double rainbow spectacle appeared.

China Jinhua

A double rainbow appeared in Pujiang County, Jinhua, China.

At about 5: 30 pm on July 2, 20 14, the thunderstorm finally stopped for half a day. At this time, a double rainbow appeared in the south, which lasted for 2 minutes and then quietly receded. It was just a flash in the pan!

Chifeng of China

A double rainbow appeared in Guandi Town, linxi county, Chifeng City, Inner Mongolia.

A double rainbow appeared on August 201April 15. The time lasted about 3 minutes, and Lou Bin took this photo in Nanshan Village, Guandi Town.

Gansu, China

Gansu Xihe Shuanghong

On August 20 14 18, a large piece of isolated cumulonimbus cloud moved from Lixian county drifted from northwest to Xihe county and advanced to southeast. 18: 33, lightning and thunder lasted for nearly 30 minutes in the urban area, and then invaded most towns and villages in Xihe county in the south. After a short thunderstorm in the city, 19: 0 1, a beautiful rainbow appeared in the sky to the east of the city. The rainbow spans the north and south of the county seat, just like a colorful arch bridge stretching into the sky on the earth. The Guanshan Mountain near the east of the city is shaded by Hongqiao, and the Rainbow Bridge and Guanshan Mountain form a magnificent natural picture. The rainbow appeared from 19, and in less than 10 minutes, another rainbow in the same direction appeared around it, which looked like concentric circles and the landscape was spectacular. This phenomenon continued until 19: 45.

Baghdad

20 14 10 15, two beautiful rainbows appeared on the Tigris River in the center of Baghdad, the capital of Iraq.

United States of America

On March 3, 20 15, Mark Metternich, a 47-year-old professional landscape photographer in Oregon, USA, captured an incredible five-mile (about 8046.72 meters) wide double rainbow with his lens in the sky at an altitude of 5,000 feet in thunderstorm weather.

Chenzhou, China

Shuangcaihong, Chenzhou City, Hunan Province, China

20 14 on the evening of August 29th, 18: 09. A year later, a double rainbow appeared again in Chenzhou, Hunan.