Seminar paper from the year 2013 in the subject Geography / Earth Science - Miscellaneous, grade: 2, 3, RWTH Aachen University (Lehr- und Forschungsgebiet Geologie - Endogene Dynamik), course: Structural Geology: Microstructural Analysis, language: English, abstract: The specific surface area it is a physically and chemically important parameter of porous materials. It is most commonly determined by gas sorption isotherms. Two of these - The Langmuir- and BET-isotherms - are evaluated in this exercise.