CHRONOLOGY OF WOODEN BUILDINGS AND THINGS FOUND IN SEVERODVINSK POOL
In the Komi branch of the USSR Academy of Sciences developed a method of finding peatlands, containing artefacts and structures from plant materials [1 ; 2 ] . The essence of wow boils down to a massive archaeological study of peatlands, river oxbow lakes, which are often included in areas of widespread settlements on outcrops and headlands terraces. These Moors are now often buried under alluvium deposits, come from a small mire, and the latter river from the oxbows. Items made from plant materials, is inevitably involved in such swamps, or ponds, are preserved by the preservative properties of peat and sapropel. Finding oxbow peat bogs facilitated by the fact that they correspond to the arcuate concave edge of the floodplain terraces developed at the time the river bends. Continue reading
1382 Russian soldiers for the first time to successfully put into field artillery. Reflecting the attacks of the besieged city of the Horde, the Muscovites, as the annals say, “mattresses puschu in NJ, some of the crossbow strelau chibaku and vices, and other great guns puschu”.
The emergence of new weapons in Russia was quite natural and historically conditioned. In the X century warriors to the princes Igor and Svyatoslav, Novgorod warriors is widely used in the fights throwing machine. Melee weapons and metal armor, made by blacksmiths, gunsmiths, has long been in great demand in the feudal countries of East and West. By the middle of the XIV century in the capital of the Duchy of Moscow started the production of gunpowder. As you can see, by this time in Russia there was a material base for the development of artillery. Let us add that almost all Russian principalities had to fight a continuous defensive wars against hungry of foreign lands the foe, advancing from different sides. Continue reading
Bridges trace their history back to ancient times. In the old days – it was just the primitive tools in kind of a log, thrown across small water barriers. Further, in the era of the slave system began to appear the first stone bridges. The most advanced in this building were the ancient Romans. During construction they have already used the cement, the secret of which was initially forgotten, but in the middle ages resumed. In the Roman Empire for the supply of towns water used aqueducts, which was a great progress and confirmation of the greatness of the Empire. By the way, the bridges built by Roman builders use nowadays.
By the Chronicles of the times of the X century the Slavs used in the construction of bridges mainly wood and not stone.
In the twelfth century appears the first floating bridge in Kiev, and the Incas up with hanging rope bridges.
But every era and every century was struck by the architecture of its bridges. Continue reading