Recent content by Lucas Olivio

Thanks berkeman! My Knowledge in these areas is moderate, my university course don't have much focus on these subjects so I end up forgetting about things. The Senll's Law I actually studied just to try solve the question, still didn't understood how the article came up with that 5 first...

Thanks Klystron! I'll give these links a try. If more doubts come I'll make sure to post here again.

Homework Statement: what is the mathematical explanation for fresnel lenses Homework Equations: No equations were provided I'm going to post a link to one article I found that I think has the answer, but I couldn't understand because of my lack of knowledge in physics and math...