Vietnam welcomes the longest total solar eclipse in the 21st century

Today (July 22), is the time of the longest total solar eclipse in the 21st century, with the maximum eclipse of 6 minutes 39 seconds. Because it is not in the total solar eclipse, it is only possible to observe part of this amazing natural phenomenon.

Only partially observed

Scientists said the solar eclipse that took place today will last for about 6 minutes 39 seconds . Therefore, this is considered the longest eclipse phenomenon in the 21st century because it must be until 123 years later - ie on 13/06/2132 - human beings have just witnessed another eclipse of the time. Longer the phenomenon will take place tomorrow.

The eclipse will begin to happen at 23:58:18 on 21/7 at UTC time - ie about 06:58:18 seconds in Vietnam time. At about 02:35:21 UTC hours - ie 09:35:21 Hanoi time - the maximum total solar eclipse will occur.

The eclipse phenomenon on July 22

The location will be observed the maximum total eclipse at the right time above is Bonin Island located in southeastern Japan. Iwo Jima Island in northern Japan will be the place where the entire longest eclipse phenomenon in the world will be observed and near the maximum of 6 minutes 39 seconds.

Only people living in narrow corridors stretch from North India, East Nepal, Northern Bangladesh, Bhutan, the northern tip of Myanmar, central China to the Pacific waters of the Ryukyu Islands, Marshall and Kiribati is able to observe the total solar eclipse this time. According to some scientists, the best place to observe the total solar eclipse this time is in the city of Taregana (India).

Southeast Asia - including Vietnam - the rest of India, China and the Northeast Pacific Island near Australia will only be observed partial eclipse in tomorrow.

The area corridor will be observed with the eclipse.

Ha Giang will be the place to observe the largest eclipse phenomenon in Vietnam with the coverage rate up to 75.8%. Next is Lao Cai (75%), Bac Kan (74.5%), Hanoi (67.5%) . The more to the south, the smaller this ratio: Can Tho (25.5%), My Tho (26%), Ho Chi Minh City (27.4%) . The proportion of areas observed in the solar eclipse in Vietnam is as follows.

Do not observe with the naked eye

Scientists warn against direct observation of solar eclipses with the naked eye or through observation devices such as telescopes, ordinary eyeglasses or camera viewfinders. Even if only observed for a few seconds, people may face eye damage, even permanent blindness.

Sunlight is not only intense but also focuses on many harmful factors that the naked eye cannot observe - infrared and ultraviolet rays. These factors can damage the observer's retina.

Normally the human retina is unable to sense pain, so almost we will not immediately feel the harm of direct observation of the solar eclipse. It usually takes a few hours before the harms appear.

To be safe when observing a solar eclipse, specialized observation glasses are required. If not, it can be observed by different methods such as looking through the XQ photographic film; Use a cardboard cover with a circular hole to guide the cover toward the sun so that the light passes through the circular hole. Place a blank sheet of paper underneath so that the sun image appears in a circle on a blank sheet of paper. When the solar eclipse happens, we will see the sun's disk being obscured on white paper.

Another method can be used by placing a small mirror under the sink after mixing ink or coloring and looking at the ' cool ' sun that passes through this colored basin.

Solar eclipses do not cause tsunamis

Total solar eclipse is a normal phenomenon of nature, does not affect human health, plants and affect the stratigraphic structure of the Earth. Therefore, rumors suggest that this total solar eclipse will cause tsunamis, earthquakes . still spreading rumors on the Internet is untrue.

Scientists have long claimed that the moon or phenomena such as eclipses of the lunar eclipse cannot cause earthquakes no matter how long it lasts . So far the moon has only been known to cause tidal phenomena . In the event of a solar eclipse, the most likely possibility is that the waves may be slightly higher than normal days. This is the reason why there are many rumors about a solar eclipse that can cause tsunamis.

From a scientific perspective, a solar eclipse, especially a total solar eclipse, is significant because it is an opportunity for scientists to study the sun's atmosphere (sphere) which is normally very difficult to observe. close and research.

In addition, this is also an opportunity to examine the properties of Einstein's general theory of relativity by observing the change in the star's apparent position near the sun during each solar eclipse.

Some astronomers also look for small bodies near the sun, inside Mercury's orbit. The SOHO Space Observatory once discovered a number of comets in the process of approaching the sun.