Final exam for my PH207x finished this weekend. I tried my best and my total score was 87% :). Finally after three months of hard work I can rest. I would like to say “Thank you” to Prof. Marcello Pagano, Prof. Francis E. Cook our lecturers and all the TAs and people involved in this beautifull project. I have learned a lot!!. Thank you very much to all the students because the forums were really helpfull. A big thanks from a friend from Peru.