How does total solar eclipse form
4hw.org: Recently, the United States will usher in a super total solar eclipse, which will cover the entire East and west coasts of North America. This is undoubtedly a great surprise to the astronomy lovers in the United States, and will also set off a nationwide viewing boom. Do you know how the total solar eclipse is formed?
According to reports, the United States will usher in a super total solar eclipse at noon on the 21st local time. The total solar eclipse, which will span the East and west coast of North America, is expected to be the most watched, with a recent viewing boom across the United States.
Oregon first saw South Carolina last
According to reports, the total solar eclipse is 113 kilometers wide across 14 states on the East and west coast of the United States, with 12 million people living in relevant areas. Oregon residents will be the first to see a partial eclipse at 9:05 local time on the 21st, and a total eclipse at 10:16 local time. The eclipse will end in Charleston, South Carolina, for four hours.
In Illinois, cabendale, the town with the longest total solar eclipse, is expected to be all dark for 41 seconds. In addition to the United States, Canada's Alberta, Brazil, the United Kingdom and western France also have the opportunity to see a few partial eclipses at sunset.
More than 7 million people should be "rising head" to drive tourism
This is the first total solar eclipse that can be observed on both the East and the west sides of the United States since 1918. It is also the first total solar eclipse that can be seen only on the mainland of the United States since the independence of the United States in 1776. Combined with the summer vacation, it is estimated to attract 7.4 million people to see it. The tourism industry, hotel rooms and inland flights are in short supply.
During the total solar eclipse, the large screen of New York Times Square will also be broadcast. Some groups suggest that the observers record the sound of the scene, so that the visually impaired can also feel the atmosphere of the eclipse.
Some parts of California and Oregon had mountain fires earlier, but they have not been put out so far. The authorities issued evacuation orders to several small towns, including sister cities of tourism hot spots watching the eclipse, and about 600 residents were forced to evacuate. Merchants were worried that the business on the day of the eclipse would be affected. The fire department would suspend helicopter fire fighting during the eclipse.
How does total solar eclipse form
Total solar eclipse: the moon blocks the visual effects of the sun
A total solar eclipse occurs because the sun is near a point of intersection between the moon's orbit and the earth's orbit, while the moon is at the farthest point from this point. Because there is a magical symmetry. The diameter of the sun is 400 times that of the moon, and its distance from the earth is just 400 times that of the moon. As a result, when the moon is completely between the earth and the sun, the sun's surface is completely obscured for those who are completely in the shadow of the moon. The sun turned black, leaving only a golden halo, and the sky turned indigo. At this time, strange phenomena happen. Birds will lose their direction or fly back to their nests. Bats and other nocturnal animals may come out drowsily.
There will be total solar eclipse and partial solar eclipse in different regions
The moon blocks the sun's light and creates shadows on the earth, making some areas unable to receive part or all of the sun's light. As for how much the observer sees the sun covered, it depends on where they are relative to the shadow of the moon. If the observer is in the penumbra (see diagram), they will see partial solar eclipse, and people in the penumbra will see total solar eclipse.