In physics, a closely related quantity called  optical depth  is used instead of absorbance: the natural logarithm of the ratio of incident to transmitted radiant power through a material. The optical depth equals the absorbance times ln(10).The term absorption refers to the physical process of absorbing light, while absorbance does not always measure absorption: it measures attenuation (of transmitted radiant power).he optical depth equals the absorbance times ln(10). The term absorption refers to the physical process of absorbing light, while absorbance does not always measure absorption: it measures attenuation (of transmitted radiant power).
The automated records management system will give the business organization streamlined operations that will reduce paper based transactions to the bare minimum. Simply, the automated records management system is a method that will do all the filing and management of documents for you.
The main elements of a record player are a turntable and a sound pickup, which consists of a cartridge and a tone arm. The turntable rotates the phonograph record; the sound pickup converts the mechanical vibrations of a needle into electric oscillations (see alsoSOUND RECORDING, MECHANICAL).