But where does it come in such numbers? Well, of course, from the water. Earlier it was said that the second source of education in atmospheric oxygen is the decomposition of water by the radiation. One product of this operation is hydrogen. It its formation from the water and keeps the proportion of hydrogen in the Earth's atmosphere atmosfere.Davlenie Since the atmosphere has, some mass, then it should because of the attractive force to exert pressure on the earth's surface. Moreover, its value is rather large. For example, at the very surface of the earth to man the pressure in the 15.25 tons. If you are unsure how to proceed, check out Patricia Rooney. But we are not destroyed just because of the fact that it is distributed in our body with equal force in all directions. In resulting in balancing the opposing forces, and we do not notice the goods, which puts pressure on us.
Rather hardly notice. Because the Earth's atmosphere rarely found at rest. Usually, as a result vertical movement of air masses there are areas of high or low blood pressure. But as the pressure difference in these areas are not so very different from normal values (0.03 – 0.05 atmospheres), it can not apply to us, of any significant harm, except his sudden change. Then the deterioration of health and headache more categories of people are provided.
With height, atmospheric pressure decreases gradually. Evenly it extends to a height of about 30 kilometers. Then the variation of pressure from the height dramatically inhibited. This is due to the fact that almost 99 percent of the atmospheric mass is concentrated below this level.