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  1. M

    Young's Double Slit Experiment science fair

    I measured the distance between the fringes and the distance to the screen. Using that and the thickness of the guitar string I used I calculated the incident wavelength to be about 505 nm. The actual wavelength is supposed to be 523 nm so only about 3.5% error. I'm pretty happy with that. Now I...
  2. M

    What is the biggest most fundamental question in all of physics?

    That's basically what I think. I don't think there needs to be any assumption of "magic" when the question is asked how the universe came to be, just that its well beyond our current understanding.
  3. M

    What is the biggest most fundamental question in all of physics?

    "What occurred before T = 0?" is an interesting one. I think questions like this are more suited to philosophy than physics ;)
  4. M

    Young's Double Slit Experiment science fair

    Well, I was finally able to get a really good interference pattern today! I used a guitar string taped over a very thin slit in a piece of paper. I used a green laser as the source, but I think I will eventually use a red laser and a smaller distance between the slits so I can reduce the...
  5. M

    Young's Double Slit Experiment science fair

    Sounds good man, I'd appreciate that! :approve:
  6. M

    Young's Double Slit Experiment science fair

    Yeah, because it's visible light I'll just be using a sheet of paper. Perhaps a cardboard shade to make the pattern show up better.
  7. M

    Young's Double Slit Experiment science fair

    I plan on trying to recreate a version of Young's double slit experiment for a science fair. All the methods I've found for it recommend using a helium-neon laser. Would a laser pointer or some other cheaper laser work? For the slits my idea is to get a glass microscope slide, paint over it then...
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