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stefan10
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Hello, my name is Stefan and I am a twelfth grade high school student working on an extracurricular project which I will present and be ranked(individually; non-competitively) on. I hope to achieve the best possible score and plan to put a lot of work into it. I have a little over a month, which I will spend probably 40-50 hours working on this project. I seem to be on the right track, but I want to make sure I understand everything conceptually with the most accuracy possible so that my presentation represents the facts correctly. Unfortunately, the only physics course offered at my school is a college preparation course and consists of very slow-paced concepts in mechanics(all algebra/trigonometry based), so a lot of these concepts involved in my experiment come from other science classes I have taken(two years of Chemistry; three years of Biology - including AP Biology) and knowledge I must self-teach/be taught by my physics teacher, whom is sponsoring and helping me gather the materials required for the experiment. Math-wise I am currently in AP Calculus AB and have a hang of derivatives, but have yet to do integrals(which I plan to teach myself.) I have alright abilities in pre-calculus, but the trigonometry course, and my quite poor Algebra II class, covered predominately exponential, logarithmic, and trigonometric functions, omitting specific details of polynomials and quadratics. We also didn't go over polar coordinates, parametric equations, sequences, conic sections, and matrices. A few of those concepts we touched a bit on, but nothing as extensive as what is in the pre-calculus book I am using to teach myself. I'm sure my physics teacher will help me with any math, although I hope to use the most advanced and appropriate mathematics in my tool-set to make the interpretation of data as thorough as possible. So any direction on that end would be much appreciated. Anyway, sorry for the long introduction, I'll proceed to the actual project description/questions. The main goal of the project is to see how the electric current of a solar panel changes based on different wavelengths and different light sources(the current ideal being sunlight.) We have a solar panel(of which I don't know the details), and colored filters. I hope to gain all of the knowledge I can about circuits and the transfer of energy through the photoelectric effect, but I am having difficulty finding answers to some very specific questions. My resources are two detailed algebra-based physics textbooks, Feynman's lectures, and the internet of course. I am considering reading sections that correspond to this from the Feynman's lecture set, which I use to understand mechanics concepts better. I assume the predominance of it would be in the second volume, but I'm unsure which chapters would help me understand the most. It seems like everything in that volume could be useful.
1. How specifically do electrons receive energy from a photon? I understand it at the most basic level taught in my chemistry class, a photon "hits" the electron transferring its energy and exciting the electron from its ground state. This causes a current to be produced by the valence electrons of the atom, specifically in conductors where there is freedom to move. I want to know how the energy is transferred though. Since the photon has the least energy possible(isn't that why it is called a "light quantum")which I assume depends on its wavelength/frequency. Basically I should drop the idea that photons transfer the electromagnetic force and see it more as photons are the electromagnetic force? If that is correct, then what happens to the photon after the energy is transferred? I want to think that it is "absorbed", yet I am not certain. If that is incorrect, then what exactly is a photon's involvement with the electromagnetic force?
2. How much energy is transferred from the photon to the electron during this process? How much is usually loss(made unusable) through heat?
3. Is there any good description on the internet which delineates the different types of solar panels in detail, the material they are composed of, and a detailed(as much as possible) explanation of how they work? If so, may you provide me with this link or various links.
4. Which light sources should show the most noticeable differences in how they affect the energy output of the solar panel?
5. How might I improve my project if I find myself to have more time to play with it, after I accomplish my targeted goals?
6. What skills should I work on in order to improve my understanding? Specifically, which chapters of Feynman's lectures would be the best to study to gain a conceptual, mostly qualitative understanding? What textbooks/web resources will allow me to refine that qualitative understanding with a quantitative one, hopefully the most specific for my current mathematical abilities?
Thank you very much for any help, and I hope my questions aren't too simple that they might be a burden to answer.
Edit: Oh, unfortunately I believe I posted this in the wrong section. I should have read the guidelines first, I thought homework was specifically formal questions. Ok, I will wait until this is deleted then I will ask in the homework section. Sorry
1. How specifically do electrons receive energy from a photon? I understand it at the most basic level taught in my chemistry class, a photon "hits" the electron transferring its energy and exciting the electron from its ground state. This causes a current to be produced by the valence electrons of the atom, specifically in conductors where there is freedom to move. I want to know how the energy is transferred though. Since the photon has the least energy possible(isn't that why it is called a "light quantum")which I assume depends on its wavelength/frequency. Basically I should drop the idea that photons transfer the electromagnetic force and see it more as photons are the electromagnetic force? If that is correct, then what happens to the photon after the energy is transferred? I want to think that it is "absorbed", yet I am not certain. If that is incorrect, then what exactly is a photon's involvement with the electromagnetic force?
2. How much energy is transferred from the photon to the electron during this process? How much is usually loss(made unusable) through heat?
3. Is there any good description on the internet which delineates the different types of solar panels in detail, the material they are composed of, and a detailed(as much as possible) explanation of how they work? If so, may you provide me with this link or various links.
4. Which light sources should show the most noticeable differences in how they affect the energy output of the solar panel?
5. How might I improve my project if I find myself to have more time to play with it, after I accomplish my targeted goals?
6. What skills should I work on in order to improve my understanding? Specifically, which chapters of Feynman's lectures would be the best to study to gain a conceptual, mostly qualitative understanding? What textbooks/web resources will allow me to refine that qualitative understanding with a quantitative one, hopefully the most specific for my current mathematical abilities?
Thank you very much for any help, and I hope my questions aren't too simple that they might be a burden to answer.
Edit: Oh, unfortunately I believe I posted this in the wrong section. I should have read the guidelines first, I thought homework was specifically formal questions. Ok, I will wait until this is deleted then I will ask in the homework section. Sorry
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