Who and when designed and built a flying submarine? Detailed answer

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Who and when designed and built a flying submarine? Detailed answer

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Who and when designed and built a flying submarine?

In the 1930s, there was a project in the Soviet Union to create a flying submarine, which was not completed. The Americans in the 1960s went further: a really working aircraft was built that could first land on water and then dive into it. The speed of its flight in the air was 130 km / h, the speed under water was 8 knots. True, the design did not provide for the ability to take off again from a submerged position. As planned by the military, such devices could come in handy during a possible war against the USSR, unexpectedly attacking ships in the waters of the Black, Azov and Caspian seas.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

How do colors come about?

The light emitted by the Sun or other very hot sources is called white light. But in reality, white is a mixture of different colors. This can be detected when viewed through a glass prism. Light, passing through it, breaks up into different colors: red, orange, yellow, green, blue, indigo, violet. How do different colors come about? Color is determined by the wavelength of light.

Light propagates in space in waves, reminiscent of the movement of waves in bodies of water. The wavelength of a light is the distance between two adjacent crests. It is so small that it is measured in millionths of a millimeter. The shortest visible waves are purple, their length is about 0,0004318 millimeters.

The longest waves are red, their length is 0,0007112 millimeters. Between them are all the other colors of the spectrum, each of which has its own wavelength. Most of the colors we see are not made up of the same wavelength, but a mixture of different wavelengths. Mauve, for example, is a mixture of red and purple brown - red, orange and yellow. Various shades of color are formed by adding a small amount of white, for example, a mixture of red and white gives pink.

Why do objects have a certain color? When white light hits an object, some of the light waves are reflected from it, and some are absorbed. A red object absorbs almost all light waves, with the exception of red ones. He reflects them, they come to our eyes, and the object seems red to us.

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