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Saturation point is the maximum amount of substance an object can absorb, including liquids, gases, chemicals, and energy. Objects have different saturation points based on size, density, and temperature. The term can also refer to people who have reached their limit of learning or alcohol consumption.
The saturation point is the point at which an object has absorbed as much substance as possible. All objects have such a point for each type of substance they can potentially absorb. Absorbed substances can include liquids, gases, chemicals and energy. Once the saturation point is reached, no additional amount of the saturating substance can be absorbed.
Perhaps the most common example of the saturation point is a sponge that has soaked up all the water or other liquid it can absorb. When a sponge absorbs water, the water displaces the air held in the pores and chambers of the sponge. Once all the air has been displaced, the sponge can no longer absorb the fluid. The additional fluid applied to the sponge will simply ooze out.
Another common example involves air. Earth’s air can contain a certain number of molecules in a given condition. When the air becomes saturated, the dew point is reached.
In chemistry and physics, the term can also be applied to the absorption of chemicals or energy. Once an object has reached its saturation point, the additional energy will have to go elsewhere. The term could alternatively be used to refer to light. Every object and solution is capable of absorbing a certain amount of light, no matter how small that amount may be. Once the maximum amount of light is absorbed, the additional light will be refracted or “bounced” off the object.
It is important to note that elements have different saturation points. This also applies to very similar items. Size, of course, plays a part in how much an object can absorb. A larger sponge, for example, will have a higher saturation point than a smaller sponge. Density is also important: a sponge with more holes will absorb more than one with fewer holes.
Temperature is another key factor in determining the saturation point. Both the temperature of the object or solution absorbing the substance and the temperature of the substance itself will cause variations in the amount of substance that can be absorbed.
While the term was originally coined as a scientific term, it has come into common use to describe people in certain situations. A person who has learned a large amount of new information in a short period of time can be said to have reached his or her “saturation point.” The phrase could also be applied to someone who has drunk as much alcohol as he can handle.
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