Hi, my first post here. Been lurking a while however. Down to business --> I need a topic for a physics project - and as of now my mind is completely blank. I'm supposed to write 4000 words about this as well as include an experiment of some sort. I'd like to do something about either waves or mechanics as I happen to find those fields coupled with astrophysics related material the most interesting. Any ideas for a topic? Thanks in advance.