Recent content by khkwang

  1. K

    What is a photon in respect to electromagnetic waves?

    Wow okay, so I guess that means we're still at a standstill between consolidating the classical and quantum mechanical interpretations? Thank you Hydr0matic, you've helped clear up something very fundamental for me. I do have a couple more questions though if you're willing to stick around...
  2. K

    What is a photon in respect to electromagnetic waves?

    I've always thought that photons and electromagnetic waves are one in the same. And I still do, but I'm trying to get a better grasp on the idea and am finding it difficult. 1) As I understand it, they are the same. But an electromagnetic wave with definite frequency is a perfect sine wave...
  3. K

    Misc. SciAm's DIY Quantum Eraser: Not Real?

    The way I see it (and take my opinion with a grain of salt because I'm just learning about the quantum eraser now and my background on quantum mechanics is pretty lacking), two waves purely polarized at right angles to each other don't interfere because the polarization itself gives the observer...
  4. K

    Learning without being spoon fed? (mod, move please?)

    Thanks! It's good to know I can find them if I need to. Aside from the unfamiliar vocabulary though, I really wouldn't mind the uncertainties the authors had. It'd be nice to see how they eventually worked things out. Any suggestions for text in particular?
  5. K

    Learning without being spoon fed? (mod, move please?)

    Learning without being spoon fed? edit: thanks mods --------------------------------- Is there a source, or does anyone have an idea how I can learn Physics without being spoon fed? I feel like whenever we were taught something new in my college Physics, we weren't given a chance to come...
  6. K

    What exactly is the amplitude spectrum of the Fourier Transform?

    Ahh, I think I get it. But by bin size I assume you mean a single individual bin's size and not the total number of bins right? Otherwise forget what I just said.
  7. K

    What exactly is the amplitude spectrum of the Fourier Transform?

    I've already considered that but it doesn't explain why the amplitude of the Fourier transform grows so much larger as one decreases the interval between time steps. It also doesn't really make sense to me that the amplitude of the Fourier transform is ~250 or ~2500 when the amplitude of the...
  8. K

    What exactly is the amplitude spectrum of the Fourier Transform?

    Homework Statement Not really a homework question, but related none the less. I'm confused about what exactly the amplitude spectrum is. As well as the power spectrum. Homework Equations Not really taking a purely mathematical approach here, I'm using numpy for python. Specifically the fft...
  9. K

    Thermodynamics: Gibbs free energy from this battery reaction?

    Ok... thanks for the answers. Still horribly confused though. Hopefully some day soon I can look back a this and understand.
  10. K

    Thermodynamics: Gibbs free energy from this battery reaction?

    So, in a reaction where the temperature were not constant, would dH be -394kJ? Then the temperature would drop; which would have to be made up for by entropy entering the system, by heat. Thus bringing dH to -316kJ? Also, what exactly do you mean by thermal energy? I'm I'm still way off base...
  11. K

    Thermodynamics: Gibbs free energy from this battery reaction?

    Thank you for the response, but I'm still confused... you explained why it happens, but not how explicitly. The energy out of the reaction itself is only 316kJ. And 78kJ enters the system by heat. But with what mechanism does it leave the system? I don't think it'd be chemical because the...
  12. K

    Thermodynamics: Gibbs free energy from this battery reaction?

    Thermodynamics: Gibbs free energy from this "battery" reaction? Homework Statement I'm reading my textbook and it gives an example. The dH of the reaction is -316kJ/mol so that much energy is released by the reaction itself. Additionally, the entropy of the products are higher than the...
  13. K

    Pulley with string attached to ground

    Thanks for your help and patience. Cheers :smile:
  14. K

    Pulley with string attached to ground

    Oh no, of course you can't tell me the answer; that would defeat the purpose. I hope you didn't take the statement in my last reply as resentment! Okay, I'll try again. Since the mass is at rest, the tension all along rope B is equal. So the tension to the left of the pulley and to the...
  15. K

    Pulley with string attached to ground

    I'm feeling pretty dense right now... I don't get exactly what you're trying to imply (I do you know you want me to come to my own conclusion though, rather than spell it out for me). I'm taking it as the peg attached to the end of the rope is equivalent to the rope attached to the ground in...
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