Recent content by James Leighe

  1. J

    Why do people wear black in the desert?

    It's probably a bad idea to wear black robes but there must be some reason. All I can say is that most of the pictures I have seen show people wearing light colors.
  2. J

    The Quark Epoch and the Existence of Space and Mass

    I don't understand, what's the question again? I'm not sure about if particles like quarks had mass or not, they probably did. I don't think the higgs field would have been any different nor the 'couplings' to it of the various particles. But I could be wrong there, and we don't even really...
  3. J

    How to calculate theoretical initial velocity?

    This sounds like a homework question. Please use the homework forums here: https://www.physicsforums.com/forumdisplay.php?f=153
  4. J

    The Quark Epoch and the Existence of Space and Mass

    Massless particles will travel at c. Just because you can't construct a rest frame for one of the particles does not mean that you can't construct any frame at all.
  5. J

    Does Light Travel Forever or Eventually Fade Away?

    But remember that takes billions of years :)
  6. J

    Does Light Travel Forever or Eventually Fade Away?

    Yes (adding text because my post was too short)
  7. J

    Infinity & Particles: Can They Really Travel at the Speed of Light?

    Photons have zero mass, and because of that they must always be in motion. Zero is a very achievable number! Like x + 5 = 5, what is x? You can't DIVIDE by zero however.
  8. J

    Does Light Travel Forever or Eventually Fade Away?

    I'm going to assume you mean a flashlight. In that case the photons will travel forever until they get absorbed. They will also lose energy over extremely long periods of time due to the expansion of the universe, but will never 'dissapear'.
  9. J

    Does Light Travel Forever or Eventually Fade Away?

    Are you talking about an electric/magnetic field (ie a magnet) or light (ie a flashlight)?
  10. J

    How to magnetize water using super magnet?

    From the website: "After magnetization, the molecules line up in sequence “+-+-“ resulting in reduced surface tension, reduced viscosity, increased dissolvability, increased permeability and increased oxygen content hence making nutrients more readily available to our body, plants and soils...
  11. J

    How Much Impulse Is Needed to Stop a Baseball with Unrealistic Momentum?

    This sounds like a homework question. Please post it in the homework forums and they can help you there.
  12. J

    How to magnetize a concrete wall?

    Maybe if your cat is reinforced with steel!
  13. J

    Difference between volume displaced fluid and volume of the object

    Only if the object is fully submerged. If the object floats, it will only displace water equal to the volume of the submerged portion.
  14. J

    Questions about Galileo statement?

    The gravitational field of the hammer would attract the moon, so the moon would move closer to the hammer, which would also make it move closer to the feather! So Galileo's statement still holds.
  15. J

    How physicists handle the idea of Free Will?

    Just because you can't predict your actions doesn't mean they are free will, which is an important point made early on. But in reality, unless you set up some kind of special case, the brain is too large to even be effected by quantum 'randomness'.
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