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Diamond cutting robot

19.01.2009

A group of engineers from the Institute for Technical and Economic Mathematics in Kaiserslautern (Germany) was able to fully automate the process of cutting precious and semi-precious stones. The machine built by them not only saves up to 30% of the weight of the stone, but also polishes ten times more accurately than the most experienced cutter.

First, the machine determines the size, shape and relief of the stone, then calculates what configuration is best for it, and presents several possible options on the monitor screen. The choice is up to the person - the operator of the machine. After 20 minutes, the stone is cut and polished. The unit has been operating since the beginning of 2008, grinding tourmaline, beryls and quartz.

Experts rate the results as remarkable. In the future, the developers intend to create a computer program that will allow you to choose between the most economical (when a minimum of material is lost) and the most beautiful cut, which creates the most spectacular play of light in the facets. But will mechanically cut stones get that individuality that only the hand of a master gives? Any stone is unique in its own way due to its shape, color, structure, the creators of the machine say.

And yet, in the passport for each piece of jewelry, they will indicate whether it is hand-cut or mechanical, so that the buyer has a choice.

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An old petrel flies 07.08.2003

The Lesser Petrel, accidentally caught on an island off the coast of Wales (UK), turned out to be the oldest representative of this species.

A ring on the bird's leg indicates that it was first caught in May 1957, when the bird was between 4 and 6 years old. So now the petrel is about 52 years old. Until now, the American albatross was considered the record longest-lived seabird - 50 years (age is also determined by the ring).

Since the small petrel flies to winter in South America, and in search of food it can fly 900 kilometers into the ocean, it is assumed that the long-liver managed to fly 9 million kilometers in his life.

Bird ringing for scientific purposes was first used in Denmark in 1899, but this method has spread more or less widely only since the late 40s of the last century. Therefore, ornithologists expect that finding the oldest birds of one species or another older than half a century may soon become fairly commonplace.

Of the birds living in captivity, whose age is known exactly, the oldest is one parrot - he is 102 years old.

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