Hi, i'm an italian physics university student who has not passed all his exams within the prescribed period of time. I ask you sorry in advance for my (really) bad english! I'm currently missing only 2 exams to get graduated! I'm so excited about it! I'm also doing a stage in a research department about fluids dynamics, indeed, that is my favourite argument in physics! I think i'm gonna ask some questions about that argoment, bacause it is so difficult, but so beautiful!