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Absorption It is a term that is linked to absorb . This verb can make reference to different questions: the damping exerted by a body before a radiation that passes it; to the attraction developed by a solid over a liquid with the intention that the molecules of the latter manage to penetrate its substance; to the capacity of a tissue or a cell to receive a material that comes from outside.

The notion of absorption (from Latin absorptive) also has wider uses. It may be something that consume or is spent entirely. For example: “The company has already absorbed all its capital”, "This case absorbs all my strength".

Absorption can also be the action of attracting ("His speech absorbed the attention of all present") or, applied the notion to a company, upon acquiring or incorporating another ("Megachip absorbed the operations of its rival Conductronic").

In chemistry , absorption is a process that separates the components of a gas from the inclusion of a solvent in a liquid state, with which it creates a solution.

For the physical , absorption is a decrease in the intensity of radiation that passes through a body.

It is known as digestion on the other hand nutrient absorption procedure which is carried out when eating food; in the same act several types of enzymes that separate those elements that can serve to be transformed into energy and collaborate with the normal functioning of the organism. This process is possible thanks to different interconnected organs (digestive system) where each one performs a function to give the body the nutritional supplements to live.

It should be noted that within the digestive process there are several stages: ingestion(food enters through the mouth in the body), chemical and mechanical digestion (food is crushed and bound to acidic substances secreted by the salivary glands and become a bolus to pass through the rest of the organs of the digestive system), absorption (the nutrients pass through the osmosis from the digestive system to the different areas of the circulatory and lymphatic system) and excretion (elimination of materials that have not been digested abroad).

Another use of the term absorption appears in linguistics , where it designates the phenomenon that arises when a vowel is incorporated into the sound of a consonant and, therefore, disappears.

Differences between absorption and adsorption

Regarding the definition of the term from physics, we can say that absorption is a process in which certain elements, such as molecules, atoms or ions pass from one state or phase to another, forming a body or material with different characteristics. It also refers to the radiation that, despite lacking volume, can be absorbed, joining the body that attracted it.

This concept is often confused with adsorption and, even, they are often used interchangeably; Nevertheless its meaning is diverse.

The term adsorption refers to a physical-chemical process in which certain elements (atoms, ions and molecules) are retained on a surface solid; It has a substance that allows it to attract these elements and create stronger chemical bonds from them.

The difference between the two concepts is that for the absorption to occur the elements must be transferred from one place to another through an absorbent type material, while in the case of adsorption, are retained (except for the radiation, which is not included) on a surface with an attractive force.

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