What is skin? Detailed answer

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What is skin? Detailed answer

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What is skin?

Skin is the skin of an animal. Usually these are the skins of cows, horses, goats and pigs.

Cattle skins are the main source of leather raw materials. Calfskin is thinner, softer and lighter, which is why the most expensive shoes and bags are made from it. The skin of goats, both young and old, is called kid skin. Most suede leathers are kid skins, sanded on the side that was in direct proximity to soft tissues. Horse skins are used to make shoes, jackets and sports equipment.

Kangaroo skins are the most durable skins. They are used to make track and field and baseball shoes. Crocodile skin is used to make shoes, handbags, wallets and travel bags. Even the skins of snakes and lizards are used for the same purposes. Tanning makes animal skin soft and supple. Tannin, which is found in oak bark and is used in the tanning of hides, causes a chemical reaction. If some amendments are made to these chemical processes, then different types of leather are obtained.

Before tanning, the skin must be treated in a special way, "preserved". This is done in canneries where they are salted to keep them from rotting. After tanning, the leathers are treated with resins, shellac, and other chemicals that make them shiny. Dyes are added for color. Shiny leather surface becomes after coating it with varnish. Suede leather becomes if its surface is sanded or treated with sandpaper so that hairiness appears.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Which vertebrate eats 6 times its own weight per day?

The smaller a warm-blooded animal, the more intense its metabolism must be in order to maintain a constant body temperature. The smallest terrestrial vertebrate is the Etruscan shrew, no more than 4 cm long and weighing about 2 g. To obtain enough energy, this animal has to eat 6 times its own weight per day. At the same time, the heart of the Etruscan shrew beats at a frequency of 1500 beats per minute.

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Random news from the Archive

US Cyber Troops Grow 16.01.2014

The US authorities in 2014 will spend $447 million on the needs of the Cyber Command of the Department of Defense, which is 2,3 times more than $191 million spent in 2013.

The new Cyber Command budget was reported by Nextgov, citing official documents published by the U.S. Budgetary Appropriations Commission.

As the Ministry of Defense explained to Nextgov, the increase in cyber command spending is mainly due to an increase in the staff of the unit. As of March 2013, it included about 830 employees. According to the program adopted by the authorities, by 2016 the staff of the cyber unit is planned to be increased by 2 employees annually.

US cyber troops are engaged in identifying and blocking threats from foreign countries affecting military and industrial computer networks. Among their tasks is protection from hacker attacks of the municipal and social infrastructures of the state.

According to the Department of Homeland Security, in 2012 the number of reports of cyberattacks on US computer networks rose to about 153, or 2011% more than in 42.

At the same time, US spending on cyber defense within the budget of the Department of Homeland Security will increase. $2014 million will be allocated under this item in 792, which is $35,5 million more than in 2013.

Thus, the Pentagon and the US Department of Homeland Security will spend a total of more than $2014 billion on cyber attacks and cyber defense in 1,2, or about 30% more than $948 million in 2013. However, both departmental budgets still need Senate approval.

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