Science
About tanning

Editing animal skin to make leather is called tanning. The tanned leather can be used for clothing and footwear, but also to upholster furniture or car coat ?? s and for many other applications from purse to purse. The finest ...

Geography: geography in the period 1870-1880

The geography developed in the period 1870-1880 because of societal dynamics. After Humboldt and Ritter was an emptiness came in geography. There were some capable geographers who followed in the footsteps of Humboldt and Ritter as Arnold Guyot and Ernst ...

Platinum: The element

The precious metal as precious platinum is not reactive and will therefore has the great corrosion resistance, also at higher temperatures. The element does not undertake quickly with other elements. It occurs in the thealluvial sand of certain rivers, and ...

What is a tornado?

What is a tornado? What is a feature of a tornado? How is it that we can see a tornado? What are the winds of a tornado? Is a whirlwind same as a tornado? Get tornadoes in the Netherlands? What ...

NASA: is there a future for the space agency?

The US space agency NASA could barely make his operational commitments without an annual billion injection. There is no successor to the space shuttle, NASA astronauts are forced to hitch a ride with the Russians to reach the International Space ...

Unlimited energy for home use

The world faces a growing energy problem. Scientists believe they have found an inexpensive solution. Energy, key problem in this time Man needs energy to live In its simplest form it is about a campfire, where you prepare your food, or a fire ...

Qualification of the labor contract

Anyone ever get to deal with a labor contract. Once you start working, one usually works on the basis of an employment contract. But when there is an employment contract? What are the elements of the employment contract? Qualification When there is ...

Nervous system; Formats of the nervous system

The nervous system can be divided in various ways. The part of the nervous system which is within the cranium and vertebral column, is called the central nervous system. The part of the nervous system, what the outside of the ...

Hormones of the hypothalamus and pituitary

The pituitary gland has two parts; the adenohypophysis and the neurohypophysis. In total, the pituitary gland secretes hormones from nine. These hormones are all peptide hormones. The anterior pituitary hormones makes seven. The hormones are stored in the posterior pituitary ...

Solving systems of linear equations

A system of linear equations made up of several equations and has multiple unknowns. We discuss two methods for solving a system of linear equations with two unknowns: the substitution method and the elimination method. Definition A system of linear equations containing ...