Saturday, December 27, 2008

Adsorber o absorber ::::: To adsorb or to absorb

Reading a book, it's common to find words which we assume that are synonyms. That's not the case for "adsorb and absorb", they are similar but not equal.

Adsorb refers to an two-dimensional action, because it means to retain something on the surface, for example:
"Heavy metals are adsorbed by the cell", because they're on the surface, on the cell wall.
Absorb refers to an three-dimensional action because it means to get inside something that was out before, for example:
"Heavy metals are absorbed by the cell", because they are inside the cell, they were trapped in the cell.
See too http://buscon.rae.es/dpdI/SrvltConsulta?lema=adsorber


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Al leer un libro, es común encontrar palabras similares y asumimos que son sinónimos. Este no es el caso para "adsorber y absorber", que son similares pero no iguales.

Adsorber se refiere a una acción bidimensional, debido a que significa que se retiene algo en la superficie, por ejemplo:
"Los metales pesados son adsorbidos por la célula", porque están en la superficie, es decir, sobre la pared celular.

Absorber se refiere a una acción tridimensional, pues significa introducir algo que antes estaba afuera, por ejemplo:
"Los metales pesados son absorbidos por la célula", porque están dentro de la célula, fueron atrapados en ella.