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The adhesive force holding the particles of the physical body at a certain distance from each other. The particles have a resistance when they are separated. Solids have a very large force of adhesion of the particles. However, the adhesion of the particles have liquids. For example, a spilled drop of the mercury does not break down on a table or glass...

The air pressure occurs on all objects and Earth's surface. It is created by the gravitational attraction of the air to the earth, and thermal Brownian motion of air and microparticles of different chemical elements. They may be of terrestrial origin or cosmic nature invading the Earth's atmosphere from outer space...

British physicist Bridgman studies have shown that under considerable pressure the water passes into the so-called hot ice and remains so at temperatures well above 0 degrees. Thus, the ice can not be of one kind, and several (six). The hot ice turns 20600 atmospheres pressure and remains solid at a temperature of 76 degrees Celsius...

Why the water extinguishes the fire? This question is not always able to correctly answer even the people who have studied physics. The reader, we hope, will not complain to us if we will explain briefly, as the water extinguishes the fire...

What is a vacuum? This question is usually answered: "the space with thin air", or "the space within the vessel, from which the air is exhausted". What is the degree of vacuum is a vacuum? Do vacuum in communication with the atmospheric pressure?..

The accumulator should be good to carry the charging process. This was achieved in the mid-19th century. In 1859, french scientist and engineer Gaston Plante built an accumulator. He took the two lead plates as electrodes, coated with a film of lead oxide. The accumulator filled dilute sulfuric acid. Plante connected to the electrodes of the constant current source, and some time passed a current through your accumulator...