Hello everybody, I'm opening this topic in order to introduce myself as a new member of the physicsforum. My name is Phellippe Waynner, I am 23, brazilian. I have been studying Electrical Engineering for 4 years in Sao Paulo state University and I have taken place in an exchange program in the Elektrotechnik department from Karlsruhe Hochschule - Germany. I am an admirer of science learning and always trying to improve my knowledge about Mathematics, Physics, and Engineering. I worked for one year as Physics teacher for engineering students and I hope my experience will be useful here in the forum, as well as my learning thirst will be more and more fulfilled!