The birth of paper money in China
The Chinese invented paper money at the end of the eighth century, the beginning of the 9th century AD. At first it was called non-money because it was so light that the…
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The Chinese invented paper money at the end of the eighth century, the beginning of the 9th century AD. At first it was called non-money because it was so light that the…
Underwater generators operating similar to wind turbines will likely be built and operated by 2010, before supplying electricity to the UK with the potential equivalent…
For a new sense of history, it is not enough to see firsthand the living relics of the past. There is also a need for another dimension, which we call time latitudes, a…
The fact that the Earth is always rotating is the reason why electricity generated from solar energy is not much, but quite expensive. Sunflower system is designed by En…
Today computers have become very popular in every social activity. But more than 30 years ago, the successful study of computerized layered tomography (VTCLPT) opened a…
Archaeological relics in Egypt show the presence of cosmetics from 6,000 years ago. Rich Egyptian women often draw light blue copper powder on their faces to accentuate…
Due to coincidence, ancient people remarked that the shadow of a tree was amputated when the sun moved in the sky. Similarly, when plugging a vertical stick on the groun…
After nearly two years of research and design manufacturing, on January 10, engineer Le Minh Hai and his colleagues at Dong Minh Gas Service Company (Vung Tau City) have…
When using a fund, people encounter many inconveniences such as a fund that cannot tell time on rainy days or at night. So the Egyptians thought of water clocks (clepsyd…
In addition to the two types of sundial clocks and water meters, there are also hourglass (sablier) used for short periods of time. Origin from Egypt, this type of watch…
From the type of water meter, people seek to invent another device that measures time. The first person to do a watch was a mechanical monk Gerbert, an astronomer. This…
The ever-present sound weapon is still considered a non-lethal type, but it will only be a matter of time if Western ambitious projects succeed ...
In 2003, Japan succeeded in creating high-tech clothing that could make people invisible to others. However, it is only a part of the body that is made by high-tech devi…
LRAD (Long Range Acoustic Device) is a machine that makes horrible howls. It weighs about 20kg and looks like a satellite antenna pan. When directed at the target it emi…
There have been many scientific inventions stemming from mistakes and absentmindedness, like Achimedes' law and many breakthrough inventions in human history that have b…