1) TV group I have not forgotten you. Since your topic is a combination of electric force, magnetic force and electrons interacting with atoms to produce light, you should look over those topics in the light and magnetic groups. You also should understand how highly energetic electrons interact with phosphors to produce light. Each electron must produce thousands of photons.
2) laser group is also not forgotten. Understand light and then investigate energy levels of interest in lasing. How are electrons excited to these levels without causing them to emit before they are pulsed. Find out how the lasers in pointers and CD players work. What are substances used, how are they energized (pumped), light frequencies, how frequently they are pulsed, how are pulses focused or aimed.
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