Usual liquids spread, poured, differ in light permeability. But there are substances capable to hold vertical position and even to maintain the weight of the person. They are called as non-Newtonian liquids.
There are emulsions which viscosity is changeable and dependent on deformation speed. Suspensions with the properties contradicting laws of hydraulics is developed much. Their use became widespread in chemical, processing, oil and other branches of the modern industry.
It is possible to carry waste dirt, toothpaste, liquid soap, drilling muds to number of non-Newtonian liquids and so forth. Usually these mixes are non-uniform. Their structure contains the large molecules capable to form complex spatial structures. Exceptions are the suspensions prepared on the basis of potato or corn starch.
Preparation of non-Newtonian liquid in house conditions
Creation of an emulsion will require water and starch. Usually ingredients are used in equal parts, but sometimes the ratio makes 1:3 in favor of water. After mixing the liquid reminding kissel on consistence and having interesting characteristics turns out.
If with an emulsion slowly to put a subject in capacity, the result will be similar to immersion of a thing in paint. Having well swung and having punched mix, it is possible to note changes of its properties. The hand will jump aside, as from collision with solid substance. The emulsion which is poured out from big height, adjoining to a surface, accumulates lumps. At the beginning of a stream it will flow as ordinary liquid. Other experiment - slowly to thrust a hand into structure and to sharply squeeze fingers. Between them the firm layer is formed. It is possible to place a brush to a wrist in suspension and to try to extend sharply it. There is a huge probability that capacity with an emulsion will rise together with a hand.
Use of characteristics of non-Newtonian liquid in creation of a slime
The first such toy was created in 1976. It found huge popularity thanks to the unusual properties. The slime was at the same time elastic, fluid and had potential to be transformed incessantly. Similar qualities made demand for a toy enormous among children and adults.
Quicksands - non-Newtonian liquid of the desert
They have suddenly properties firm and liquids thanks to an unusual configuration of grains of sand. The water flow which is under quicksands shakes up a loose coating of grains of sand until while the mass of the traveler who came on a bottom brings down structure. Sand is redistributed and begins to suck in the person. Attempts to be chosen independently lead to the air depression, with a titanic force pulling legs back. The effort necessary for release of extremities in this case is comparable with a car weight. Density of quicksands is more than density of underground waters. But it is impossible to float in them. Because of the increased humidity of a grain of sand form viscous substance. Any attempt causes to move powerful counteraction. The sandy weight moving with a low speed does not manage to fill a cavity which is formed behind the shifted subject. In it the vacuum is formed. In response to sharp movements suspension hardens. Movement in quicksands is possible only when it is carried out very smoothly and slowly.