Which popular idea of Viking equipment is a myth? Detailed answer

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Which popular idea of Viking equipment is a myth? Detailed answer

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Which popular idea of Viking equipment is a myth?

There is no historical evidence that the Vikings fought with horned helmets. They wore such headdresses only for ritual purposes or as decoration for special merits. In battle, the horned helmet is impractical, as it does not allow the opponent's sword to slip off.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

Why is gravity different in space than on Earth?

Every object in the universe acts on another object, they attract each other. This is called gravity, or gravity. The force of attraction, or gravity, depends on two factors. Firstly, it depends on how much substance the object, body, object contains. The greater the mass of the substance of the body, the stronger the gravity. If a body has very little mass, its gravity is small.

For example, the mass of the Earth is many times greater than the mass of the Moon, so the Earth has a greater gravitational force than the Moon. Secondly, the force of gravity depends on the distance between the bodies. The closer the bodies are to each other, the greater the force of attraction. The farther they are from each other, the less gravity.

Now let's look at human existence on Earth. The Earth has more mass than a person, so gravity keeps him on Earth. But the Earth acts as if all its matter, all its substance are in the center. Therefore, the force of gravity anywhere on the Earth must be calculated taking into account the distance to its center.

The force of gravity on the coast of the sea is greater than on the top of the mountain. Now imagine a person who has retired from the surface of the Earth for a long distance. There, the force of gravity will be much weaker. When a person is in space, he completely disappears from the field of gravity. The Earth's gravity does not affect him at all. He is in a state of weightlessness. Therefore, rockets, spaceships, astronauts can fly freely in open space.

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Such devices appeared in the 90s, they are very expensive, more than 50 thousand euros, and only a rich clinic in a rich country can afford this equipment. Scientists from the Fraunhofer Institute for Biomedical Technology figured out how to do the same for just 400 euros.

“We have equipped a conventional ultrasonic device with inertial sensors that can accurately indicate the position and orientation of the emitter,” says project leader Dr. Urs Schneider. “They are usually not very sensitive, the position measurement error is up to ten degrees. However, using a special algorithm, it was possible to reduce it tenfold This will be especially useful in Eastern Europe: its residents will also benefit from the best diagnostic methods.The system, which consists of a small device and software for it, will be ready for sale by the end of the year, and then it will be easy to upgrade existing ultrasound devices so to build three-dimensional images with their help.

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