Solar eclipse | Nearly 90% of the sun is blocked at 4pm and will wait for 50 years to teach the partial solar eclipse in the Space Museum

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Written by: Golden Chess

2020-06-20 10:00

On June 21st (Sunday) this year, Hong Kong will see a partial solar eclipse. At that time, nearly 90% of the sun’s surface area will be covered by the moon. There will also be solar eclipses in Chiayi, Taiwan and Xiamen, Fujian. The Hong Kong Space Museum stated that this time the solar eclipse is in the afternoon, the sun is at a high position, and if the weather is good, the public can enjoy it as long as it is west-northwest without shelter.

Dai Xiaofeng, assistant curator of the Hong Kong Space Museum, said that the next eclipse covering 80% of the area will wait until 50 years later by 2070. "If you miss it, you will lose ground this time." He reminded the public to watch it in the correct way. For example, you can make your own "sun pinhole projection box". Don't just wear sunglasses to watch the solar eclipse, otherwise it will hurt your eyes.

"Hong Kong 01" will also be broadcast live throughout.

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The solar eclipse will start at 2:37 pm, and will reach the stage of "eating too much" at 4:08 pm. It will be 5:25 pm until the moon completely leaves and no longer covers the sun. (Provided by the interviewee)

Following the partial solar eclipse in Hong Kong at noon on the Day of Unpacking Gifts (December 26) last year, it can be seen again on June 21 this year, when the sun is covered by 86% of the area, said Dai Xiaofeng, assistant curator of the Hong Kong Space Museum Is more exciting than last year. He also explained that this time Xiamen, Fujian, and Chiayi, Taiwan, are "relatively lucky" and will see a solar eclipse, but the entire process takes a different time than Hong Kong. In Hong Kong, "there are a lot of skews", so we only see partial eclipses.

Dai said that the solar eclipse is divided into three stages. This time the eclipse "first loss", that is, the moon has just begun to cover the sun, the time is 2:37 in the afternoon; 4:08 pm to the "eclipse" stage, that is, the sun is most covered At that time, the eclipse will reach 0.89; when the moon completely leaves and no longer covers the sun, it will be "returning", the time is 5:25 pm, and the entire eclipse will last 2 hours and 47 minutes. The Observatory predicted that there would be sunshine for part of the day, and there would be a shower or two in the morning.

It is difficult to estimate the effect of the solar eclipse on the change of light and darkness, emphasizing that "it will go to the sky to exaggerate"

Will the sun be obscured by the moon, will it make the sky darker in Hong Kong, or even day and night? Dai Xiaofeng pointed out that the energy coming to the earth will decrease, so the light will also decrease. He believes that the key is related to people's perception, because sometimes it is not very sensitive, "The eyes will not be too aware of the dimming at the beginning, and they will not eat too much when they go, and the changes will be sensitive, and some people will feel like dark and some people. It’s not a good idea." Coupled with weather factors, such as cloud cover and air pollution, the variables will increase, so it is difficult to estimate the changes in light and darkness at that time, but emphasizes that "it will go to dark and exaggerated."

Nearly 90% of the sun is covered. Some people describe it as "Emeiyue". Dai Xiaoyan said that moon phases are "unlike each other" with solar eclipses and lunar eclipses, because the edges of the solar eclipse and the like are round, while the moon phases' profit and loss are oval. In addition, this eclipse is in the afternoon, so the sun is in the west. Dai suggested that the public can watch it in the west of the northwest without shelter.

▼Revisit the partial solar eclipse that appeared in Hong Kong on December 26, 2019▼

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Citizens can make a self-made pinhole projection box to watch "the most easiest mistake is to wear sunglasses"

For ordinary citizens, there is no special equipment at home to watch the solar eclipse, but you can make your own pinhole projection box, and the paper pattern can also be downloaded on the space museum website. Sun rays pass through the pinhole and project to the bottom of the box, and then look into the box through the rectangular hole, you can safely watch the eclipse. Dai Xiaofeng reminded that when using a pinhole projection box, the most important thing is to face away from the sun, otherwise "getting nothing is useless."

"The easiest mistake is the easiest to get, that is, sunglasses," Dai reminded members of the public not to wear sunglasses for viewing only, because the degree of dimming is not enough, it will hurt the eyes; and do not believe in random or self-made viewing method.

▼How to watch the solar eclipse correctly▼

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There will be no solar eclipse or total solar eclipse before 2100 in Hong Kong

Dai Xiaofeng pointed out that the next eclipse in Hong Kong will be on April 20, 2023. It will still be a partial solar eclipse; but the eclipse will only be 0.027 at that time, "it is too thin, no glance." The next time is the partial solar eclipse on June 1, 2030, and the food score is only 0.2. "It's all good, but it seems like you can look forward to it."

He also pointed out that according to statistics, there will not be a solar eclipse or a total solar eclipse in Hong Kong in this century, 2100 years ago. "In fact, it is very difficult. It seems that I am not waiting for the rabbit to wait." The last time a solar eclipse appeared in Hong Kong was in 2012, but it was not cloudy because of the cloudy day.

In the past, the eclipse space museum will also hold viewing activities, but this year under the new coronary pneumonia epidemic, Dai Xiaofeng said that for the time being, it will only be confirmed that the Space Museum will host the Observatory Nature Education Center and Planetarium with the Hong Kong Observatory and Secolor Garden on June 21. A joint online live broadcast of the Po Leung Kuk Yan Bao Ling Academy and the Hong Kong Anglican Sun Pavilion and Holiday Camp.

▼Wrong way to watch eclipse▼

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▼Review the partial solar eclipse on December 26, 2019▼

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