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What bird does the Mayan pyramid echo resemble? Detailed answer

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What bird does the Mayan pyramid echo resemble?

The Pyramid of Kukulkan is one of the few architectural structures preserved in the ancient Mayan city of Chichen Itza. If you stand directly opposite the main staircase of the pyramid and clap your hands, you can hear in response a "chirping" echo, very similar to the sound of quetzals - birds revered by the Indians of Mesoamerica.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

Why is the diameter of the arena in any modern circus 13 meters?

The circus in its modern form appeared in the 18th century, and the Englishman Philip Astley is considered its "father". It was he who empirically established that it is most convenient for horses to run in a full gallop in a circle with a diameter of 13 meters. This diameter of the arena is observed today in most circuses in the world.

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Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

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Random news from the Archive

New principle of X-ray generation 16.02.2021

X-rays, which are widely used in medicine, flaw detection and many other fields, are usually obtained using special vacuum devices called X-ray tubes. Inside these tubes, electrons are accelerated by a high electrical potential and collide with a metal anode. The energy of accelerated electrons is transferred to the metal atoms, which pass into an excited state, a complex oscillatory process occurs that generates a radiation flux in the X-ray range.

Unfortunately, the generated radiation flux spreads uniformly in all directions, and the properties of X-rays greatly complicate the task of focusing them and forming a narrow directional beam; moreover, the X-ray pulse front in most cases has an absolutely random shape.

However, physicists from the University of Göttingen have developed a new principle for generating X-rays, which allows you to get a beam directed in a strictly specified direction.

The new technology is based on a structure of three materials with completely different electronic characteristics. And the thickness of such a three-layer "sandwich" is only a few millionths of a millimeter.

An object made from such a thin layered material is placed in place of a metal anode in a conventional X-ray tube. X-ray parameters can be controlled at the stage of production of a multilayer anode by changing the order of alternation and thickness of layers of different materials.

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