Absorption

Absorption has a number of meanings:

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• In physics, absorption is a process in which particles of some sort encounter another material and are taken up by or even disappear in it. Specifically, it can refer to:

:*Volume absorption of particles of gas or liquid in liquid or solid material is studied in physical chemistry.

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:*In optics absorption refers to the absorption of photons by a material.

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:*In acoustics absorption refers to the absorption of sound waves by a material.

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• In economics, absorption refers to the total demand of an economy for goods and services both from within and without the economy.
• In mathematics, absorption laws ( and ) define a lattice, for example in Boolean algebra where the operations $wedge$ and denote AND and OR, respectively.

Absorption: Absorption has a number of meanings:...

Gas: :For other meanings see gas (disambiguation)....

Liquid: A liquid (a phase of matter) is a fluid whose volume is fixed under conditions of constant temperature and pressure; and, whose shape is usually determined by the container it fills. Furthermore, liquids exert pressure on the sides of a container as well as on anything within the liquid itself; this...