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First linen fabric

20.06.2010

The first clothing of an ancient man about 70 thousand years ago was, as far as is known, the skins of animals. Later, people learned to use plant fibers to make clothes.

Recently, archaeologists have found the remains of flax fibers from the Paleolithic era in a cave in western Georgia. Some of them are painted with natural pigments in black, pink and turquoise. If the fibers were dyed due to physical and chemical processes in the soil, their colors would be the same, so this is clearly the result of the activities of the ancient textile workers.

Linen dyeing is quite a complex process, and it is surprising that Paleolithic people mastered it. Radiocarbon dating showed the age of this flax - about 36 thousand years.

Around that time, the first aliens from Africa appeared in Europe, where modern man was born. Apparently, the cool climate of Europe forced them to take care of making clothes.

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American physicists have created the world's first desktop x-ray laser. This development opens up huge opportunities for progress in many areas, including medicine, biology and nanotechnology.
For half a century, scientists have been trying to create a compact and inexpensive X-ray laser capable, in particular, of taking ultra-high resolution images. Such a device would allow one to look inside a living cell or study chemical reactions at the nanoscale.

Unfortunately, most modern synchrotrons that produce the X-rays required by scientists consume huge amounts of electricity. In addition, they are huge in size, often comparable to a football stadium. Naturally, this hinders their widespread use.

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The desktop device produces a bright, directional X-ray beam with a wavelength 1000 times smaller than visible light. This allows the beam to penetrate various materials and study them at the nanoscale, inaccessible to other devices of this size and cost. The new technology will certainly come in handy in numerous studies on the development and optimization of a new generation of electronics, information and energy storage devices, and medical diagnostic technologies.

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