The Hertz–Knudsen equation describes these regions using a “sticking” coefficient. Alexander Balandin proposed the “multiplet hypothesis” to explain one mechanism in these regions. Spot profile analysis is used to improve low-energy electron diffraction when studying non-ideal examples (15[1])of these regions. Walther Kossel (15[1])and Ivan Stranski introduced the terrace ledge (15[1])kink model of these regions, which are studied (15[1])by (*) Auger (10[2])electron spectroscopy. (10[1]-5[1])These regions can be imaged in “tapping” (-5[1])and “non-contact” modes by a cantilever (10[1])tip in (10[1])atomic force microscopy. (10[1])One process (10[1])that occurs at these regions is described (10[1])by the equation k times p (10[1])over 1 plus k times p equals fractional occupancy in a model extended (10[1])by BET theory that was developed by Irving Langmuir. (10[1]-5[1])For 10 points, (10[1])adsorption (10[1])occurs at what regions between a solid and its surroundings? (10[1])■END■ (10[8])