When was the zipper invented?
When was the zipper invented? The zipper was invented in 1913 by Gideon Sundback, a Swedish-American mechanical engineer who worked for the American clothing company Whitcomb Judson.
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What is the deepest part of the sea in the world?
What is the deepest part of the sea in the world? The deepest part of the sea in the world is the Mariana Trench, located in the Pacific Ocean, between the islands of Guam and the Philippine...
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Why is the water in rivers not salty?
Why isn't river water salty? River water isn't salty because it mainly comes from precipitation such as rain and snow, which do not contain mineral salts.
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Is it true that virtual reality or augmented reality already existed since the 60s?
Is it true that virtual reality or augmented reality already existed since the 60s? Yes, it is true that the concept of virtual reality and augmented reality existed as early as the 60s. Sci...
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Why do dogs wag their tails?
Why do dogs wag their tails? The tail movement is a visual signal that has been evolutionarily developed to communicate with other dogs and with humans. The movement of the tail is a way to...
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Why are my eyes burning?
Why do my eyes burn? There are several reasons why the eyes can burn. Here are some of the most common causes.
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What does the Z mean on Russian tanks?
What does the Z on Russian tanks mean? The letter "Z" on Russian tanks indicates that it is an experimental model or a prototype, which has not yet been officially adopted by the Russian arm...
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The true story of American Express
The true story of American Express - American Express was founded in 1850 in Buffalo, New York, as a shipping and money exchange company. Initially, the company focused mainly on providing f...
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New iPhone 13
New iPhone 13 - The iPhone 13 was launched by Apple in September 2021. It has a 6.1-inch Super Retina XDR display with a resolution of 2532x1170 pixels and supports ProMotion technology.
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