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The mysterious stones of the planet
Science has reached the depths of the sea and the heights of space, but still powerless before some of the stones ― the ancient and unknown.
Science has reached the depths of the sea and the heights of space, but still powerless before some of the stones ― the ancient and unknown.
Scientists have found that most are made of solid lava, but there are instances, and made of sedimentary rocks. Balls were found in many countries and continents ― Central America, USA, New Zealand, Romania, Kazakhstan, Brazil and Russia. Many unique specimens have been stolen, destroyed or even blown up, as the hunters believed that the inside can be hidden gold.
According to historians and archaeologists in Central America balls could muster in front of the house of nobles, thus demonstrating their status, but that doesn’t explain their purpose, in particular, in Novaya Zemlya or Franz Joseph Land. Continue reading
In Torun is full of beautiful places!
Torun is one of the most beautiful cities in Poland, situated on the North of the country on the banks of the Vistula river. Gothic architectural monuments located in the Old town of Torun, in 1997 were listed as a world heritage site by UNESCO. During the second World war, the city is not substantially affected, so all the old buildings and the building retains its original appearance.
Archaeological excavations confirm that the first settlements on the territory of present city was founded in 1100 BC but the name Torun gave the settlement the knights of the Teutonic order, who arrived here in the early thirteenth century. and who built a castle here. Toruń city rights received in 1233 over the centuries, the city remained an important center of trading routes and several times changed its owners: toruń was a part of not only Poland, but also Prussia and Sweden.
Torun – the city is famous for gingerbread, a genuine Gothic structures and Nicolaus Copernicus. Here, in 1473 G. was born the famous astronomer and mathematician, the author of the geocentric system of the world, which marked the beginning of the 1st scientific revolution. The Nicolaus Copernicus University in Torun is one of the most prestigious Universities in Poland. Continue reading
Facilities for surface water intake
Complex structures, which serve to extract water from the source is called the water intake. Depending on the source water supply intake structures are distinguished:
a) coastal;
b) run-of-river;
b) reservoir;
d) lacustrine;
d) marine.
According to the degree of stationarity of the intakes are divided into stationary and non-stationary (floating, travelling). By purpose are divided into technical and drinking. Duration of operation – permanent and temporary. Technological and design features – bucket, power, combined, etc. By location of receiving waters – coastal and bed. The required reliability of water supply in accordance with the instructions of SNiP II-31-74. The performance of small (less than 1 m 3 /h), medium (from 1 to 6 m 3 /h) and large (more than 6 m 3 /h). Continue reading
