The optical thickness Ï of a medium is a dimensionless quantity that characterizes the attenuation of optical radiation in the medium. The attenuation results from the joint action of light absorption and light scattering.he optical thickness Ï of a medium is a dimensionless quantity that characterizes the attenuation of optical radiation in the medium. The attenuation results from the joint action of light absorption and light scattering.
As nouns the difference between automation and automatization is that automation is the act or process of converting the controlling of a machine or device to a more automatic system, such as computer or electronic controls while automatization is a process of making an action of a higher animal reflexive.
autologous graft (autoplastic graft) a graft taken from another area of the patient's own body; called also autograft. avascular graft a graft of tissue in which not even transient vascularization is achieved.bone graft bone transplanted from one site to another.ee also allograft, autograft, isograft, skin graft, xenograft. Immunology Any tissue taken from one part of the body of the same or different person and used to replace diseased or injured tissue in another part of the body.