What is the Great Migration of Nations? Detailed answer

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What is the Great Migration of Nations? Detailed answer

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What is the Great Migration of Nations?

In Europe IV-VII centuries. a number of movements of tribes from the periphery of the Roman Empire to its territory or within it. The impetus was the movement to the west of the tribes of the Huns, who united or ousted other tribes from their territories.

As a result, during the V century. Germanic tribes settled throughout the territory of the Western Roman Empire, forming a number of barbarian kingdoms, one of which, the kingdom of the Franks in Northern Gaul, swallowed up most of the other barbarian states.

Author: Mendeleev V.A.

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Images are projected onto clean air 07.05.2004

A small American firm "102 Technology" has developed a method for projecting images into clean air.

The projector can work as a TV or computer monitor. Screenless projectors are known to throw an image onto a curtain of laminar fog or steam, but here a high-quality color image appears simply in the air above the projector.

So far, only two prototypes of the projector have been made: one gives an image with a diagonal of 105, the other - 38 centimeters. The image can be interactive, that is, you can use your hand, like a computer mouse cursor, to drag file icons and turn on one or another computer function.

Since the patenting of the device and process has not yet been completed, the company representatives do not give out a secret. They only say that a laser is used and that for work the projector passes air through itself without adding anything to it.

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