But, if you are serious about learning Italian - and even before you buy or subscribe to any expensive courses (except, obviously, GamesforLanguage.com's Italian Story, which is FREE!) - you may want to learn more about Benny's approach by clicking on his explanation of Why Italian is easy!.
Coefficient of thermal expansion. The coefficient of thermal expansion describes how the size of an object changes with a change in temperature. Specifically, it measures the fractional change in size per degree change in temperature at a constant pressure. Several types of coefficients have been developed: volumetric, area, and linear.
Air Film Coefficient. Air Film Coefficient is a method to account for the heat transfer of the thin layer of still air on the surface of structure. This thin layer or Air Film has some thermal resistance. The Air Film Coefficient is a number used in calculating the heat transfer through a structure. There is a coefficient for the outside and inside surface. Home Energy Reference & Encyclopedia (HERE) is a free resource for any professional involved in residential energy analysis or home performance evaluations.