Ультразвуковое исследование

the Birch Karelian - a special version of a birch warty from family berezocvetnyh (Betulaceae), characterised by thickenings on a trunk and figured mramorovidnoi a wood structure (dark brown inclusions on a light yellow background) the Tree in height to 35 metres with diameter of a trunk nearby to 60 centimetres. Meets it is scattered in woods of Kareliya and further on the east to Urals Mountains, and also in Latvia, Belarus, Estonia, in the countries of Scandinavian peninsula. Population is limited.

Beechen wood light, with a krasnovato-yellow or grayish shade (from here the name a red beech unlike so-called «a white beech» - a hornbeam), year rings are expressed poorly. At the expense of homogeneous structure of wood the beechen floor visually looks quiet, warm, even soft.
Beech - the firm and strong tree which is not conceding in this respect to an oak. It is well processed by the cutting tool and it is ground. It is usually used for parquet floors and for furniture manufacturing, including gnutoi, so-called

Zabolon' sweet cherry wood narrow, yellowish. Mature wood rozovo-brownish, sometimes rozovo-grayish. Wood structure rovnovoloknistaya with rather uniform structure. Sweet cherry wood very decorative, has a beautiful warm shade, but eventually darkens.
On hardness sweet cherry wood essentially is softer than an oak and well gives in to all kinds of processing. It is used for furniture manufacturing, including gnutoi, so-called

Wood gevei melkosloinaya, strong, wearproof, is not subject almost to water influence, very well resists to decay and insects. It is well processed and polished almost to mirror shine. In comparison with other breeds of trees of the same density, shrinkage of a rubber tree rather small. In wood gevei the thickened lacteal juice containing natural rubber contains, that complicates its processing and, in particular, a covering a varnish a little. Before a covering poliuretanovymi varnishes drawing of the first coats excluding «podjig» wood is necessary.

the Tree in height reaches 25 metres at diameter of a trunk to 0,8 metres. Grows in a wild kind in Brazil (area of Amazon), Panama, Guiana, Surinam and some other places of the South America. Population is limited.
Colour of mature wood on a fresh cut krasnovato-grey with dark proveins. Having stood some time for air, amaranth wood accepts colour from purpurno - pink to beet and violet. While in service on light gradually darkens. Because of characteristic colour an amaranth quite often name «a violet tree», as has received reflexion in variants of its German and English of names.

Wood outwardly monophonic, shining, without patterns though on radial cuts drawing from year layers can be marked. Colour from whitish to is pale-brown, it is frequent with a pink shade. An arrangement of fibres from direct to voloknisto-svilevatogo. A structure from average to the large. Wood meets a pattern very seldom. The pattern anegre is very much allocated. As a result of it the interline interval is very decorative, especially in a combination to polishing and when the pattern incorporates under 90 °.

Hardness - ability of wood to resist to penetration of firmer bodies. The Structure (English - texture) - natural drawing, visible at a trunk cut, the visual characteristic of wood defined by its anatomic structure, width and the form of year rings.
The invoice - a visible structure of a surface of a material. There are invoices relief and smooth. In turn relief invoices share on corrugated and imprinted, at carpet products - nap.
Fold - rectangular sample on a board or board edge. The square fold with the party equal to half of a thickness of a board, is called as a quarter.

Colour of wood from kremovo-white to pale yellow colour. Wood abachi soft, but strong and formoustoichivaya. A structure small and equal. Fibres it is frequent putano - svilevatye, on radial raspilah form poorly appreciable strips.

oxidation Degree - an indicator of change of colour of wood under the influence of light. At small degree of oxidation wood does not darken, at average - wood under the influence of light darkens slightly, and at high - dimness will be considerable.

wood Swelling - ability to increase in the sizes at saturation by a moisture. Early wood (English - early wood) - a part of a year ring which is formed in an early stage of the period of growth. Less dense and more light, than late wood. Svilevatost' - a wavy, chaotic arrangement of fibres of wood.
Core (English - pith) - the narrow central part of a trunk consisting of a friable (soft) fabric, characterised brown or more light, than at surrounding wood, colour.
Serdcevinnyi a beam (English - ray) - lentopodobnoe formation from the cages, directed radially in relation to growth layers.