It is a very nicely presented information about the different aspects of friction. Actually I am interested to reproduce some of the figures given here to explain the different types of friction. But I can not contact science.facts.net. Kindly give the E-mail address so that I can send the required permission request form. I am preparing a chapter on the tribology of polymers and their micro- and nanocomposites. I would like to use some of the nice figures presented here.
