absolute air pressure

On commercial scale, nitrogen is obtained by the fractional distillation of liquefied air. The compressed carbon dioxide free air is liquefied by allowing it to expand in a region of low pressure. The liquefied air is then subjected to fractional distillatio..

Atmospheric Pressure - The atmosphere is the layer of air around the earth. It extends up to 1000 km above the surface of the earth and has a total weight of 4.5 10 1 8 kg (i.e., five million billion tons). This weight exerts a pressure on the surface of the earth whic..

The atmosphere is the layer of air around the earth. It extends up to 1000 km above the surface of the earth and has a total weight of 4.5 10 18 kg (i.e., five million billion tons..

If a liquid is placed in an open vessel, there is complete escape of molecules from the liquid to the atmosphere. If a liquid is allowed to evaporate in a closed vessel, the molecules escaping from the liquid surface are collected in a vapour state, above the surface of the liquid within the conta..

We can investigate pressure in a liquid by using the apparatus shown in figure belo..

Atmospheric pressure is used in many of the things that we do. For example, when we drink water with a straw [figure (a) shown below], while sucking, our lungs expand and air in the drinking straw goes into them. The air pressure in the straw decreases and th..

The chief source of free nitrogen is atmospheric air and nitrogen is usually prepared from it. Air free from dust, water vapour and carbon dioxide is compressed in a compression chamber for liquefaction. Firstly, the pressure on the air is increased to ..

Presence of Water Vapour in Air - Ordinary air seems to be dry. It does not cause wetness on our body or clothes. However, you may have some idea about the huge quantity of rain, snow, dew, etc. that gets formed in a year throughout the world. All of it comes only from the ..

Let light travel from air to medium 1. If c and v 1 are the velocities of light in these media, the refractive index of medium 1 with respect to air, or the absolute refractive index of medium ..

Let light travel from air to medium 1. If c and v 1 are the velocities of light in these media, the refractive index of medium 1 with respect to air, or the absolute refractive index of medium 1 is given by Similarly, when light travels from air to medium 2, ..