Thermodynamics is a funny subject. The first time you go through it, you don't understand it at all. The second time you go through it, you think you understand it, except for one or two small points. The third time you go through it, you know you don't understand it, but by that time you are so used to it, it doesn't bother you anymore.

Arnold Sommerfeld

This quote by the German phycisist Arnold Sommerfeld certainly did not hold for Prof. Eduard Hala, who not only helped shape the scientific directions of the Institute of Chemical Process Fundamentals, but more importantly was one of the world best known thermodynamicists.

To commemorate the 95th anniversary of his birth and the 25 years since his passing, we decided to publish  a book in the Academia publishing house series Science Around Us. Free printed books may be found in every Academia bookshop or downloaded as pdf.