I need some ideas for my project. I'm really new to quantum physics. I did a project about the Bohr's theory for the school's science fair (just ended this week). It was about proving the Bohr's theory, the Rydberg constant, and test the Bohr's theory availability to explain the spectrum of bigger atoms other than Hydrogen (I used Helium and Lithium). I assumed that the spectrum of Helium should be a combination of Z=2 spectrum (ionized He) and Hydrogen spectrum (neutral He). And Lithium should be a combination of Z=3 spectrum (doubly ionized Li), He spectrum and Hydrogen spectrum. My result for Lithium was almost just what I expected, but for helium, there are 3 mysterious lines come from nowhere (I recall one very bright yellow line and two not-so-bright blue lines). I asked around and they say it was transition of the l (orbital quantum number), but not of the n (principal quantum number). My conclusion was Bohr theory was correct, but for bigger atoms, we need to also consider other quantum numbers. That was my project. Now I'm considering building more on it or make a totally new project (for the county, and I have about only 4 weeks left). And if I choose to build more, what can I build more on my project to meet the level of a county project? Can I do some more experiment or something to build on it...? Please help me. Thank you a million in advance!