With the approaching of the super solar eclipse day in the United States, the demand for eclipse glasses in the US market has skyrocketed. Kansas City solar eclipse glasses are about to go out of stock.

Local American media reported that in Kansas City, eclipse glasses in many stores have been out of stock. It is known that Kansas City is one of the few major cities that can watch this total solar eclipse.

Eclipse glasses are made of light-reducing film or light-reducing film, whose visible light transmittance does not exceed 3/10000, and can filter ultraviolet and infrared rays. Scientists have suggested that total solar eclipses must be used to observe total solar eclipses. Watching the eclipse with naked eyes can cause short-term or even permanent damage to the eyes. Sunglasses have a high light transmittance and cannot replace eclipse glasses.

The person in charge of the Kansas City Science and Technology Museum (Science City) said that the store's paper-framed eclipse glasses sold nearly 9,000 pairs on the 14th and will be out of stock on the 15th. "It's too late to buy."

According to media reports, from last weekend, people rushed to the Kansas City Science and Technology Museum from various places in the United States, long queues to buy a pair of eclipse glasses for $ 2.99.

"Originally thought that the supply of glasses was sufficient, but did not expect to sell so hot", the head of the Kansas City Astronomical Society also said recently that the eclipse glasses of the Astronomical Society store have also been sold out. It is reported that thousands of pairs of glasses stored in the local PartyCity store and Sabates Eye Centers have also been sold out.

At the same time, the US e-commerce Amazon's solar eclipse sales are also rising. For the past few days, the top three in the product search list are all related to total solar eclipse glasses.

However, NASA recently issued a reminder stating that ISO-certified eclipse glasses can effectively withstand eclipse glare. Later, the e-commerce announcement stated that some eclipse glasses sold by some merchants on the platform did not obtain ISO certification or could not block the eclipse light. This news caused people's concerns.

In this regard, Jim Ward, owner of the Brookside toy technology store in Kansas City, said: "For the first time in 40 years of paper-framed eclipse glasses, it was the first time I heard that I need to obtain ISO certification." He said that like most consumers , Can not judge whether these uncertified glasses can play a protective effect.

It is worth mentioning that a few days ago, NASA, Google, the American Academy of Space Science and other agencies jointly distributed 2 million pairs of eclipse glasses in 6,900 libraries across the United States. According to the website of the American Astronomical Society, one million deputies have been taken away.

American scientists predict that the super total solar eclipse will begin at 9:05 am Pacific Daylight Time on the 21st from Oregon and cross the entire United States for a duration of more than four hours. This is the first total solar eclipse across the United States in 99 years. If the weather is fine, the solar eclipse can be seen throughout the United States. In the United States, a "total solar eclipse zone" with a width of about 70 miles will be able to watch the super total solar eclipse. (Finish)

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