The site (not available now) was created during 2000. Many good contents such as Fluid Mechanics lecture notes, Solved problems for fluid mechanics, mechanical operations, thermodynamics, process calculations, heat transfer were added. Viewers to the site were about 1000/day.

The above contents were tranferred to the site (this too, not available now) by May 2004.

By 2009, was created, by moving the contents from the previous site.

By September 2014, lecture notes for Environmental Science and Engineering, Energy Engineering, Process Economics, Process Equipment Design, Instrumental Methods of Analysis, were added to this site.