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.
Mechanization or mechanisation (BE) is the process of changing from working largely or exclusively by hand or with animals to doing that work with machinery. In an early engineering text a machine is defined as follows: