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DLS

Example of any 2 particles which do not exert Gravitational force on each other?

  • one year ago
  • one year ago

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  1. DLS
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    @experimentX @Mashy

    • one year ago
  2. Mashy
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    photons? :P

    • one year ago
  3. DLS
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    I thought of photon but its not exactly massless..it has SOME mass so negligible..but no 0

    • one year ago
  4. DLS
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    timing:D

    • one year ago
  5. Mashy
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    ermm.. is it?.. i thought it had no mass :D

    • one year ago
  6. DLS
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    \[\LARGE M_{p}=1.8 \times 10^{-42}g\]

    • one year ago
  7. Mashy
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    omg.. :O.. where did you get that from? :O.. anwyays.. there are no particles then without gravity as far as i know :O

    • one year ago
  8. DLS
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    if photons dont have mass how do they have momentum?

    • one year ago
  9. Mashy
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    that is really more subtle than you think.. when light can act like both particle and wave... which itself is mind boggling.. you think it not having mass but having momentum is a big deal? :P

    • one year ago
  10. DLS
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    lol

    • one year ago
  11. Iamgmg90
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    You measure gravitational force on particles that's at a quantum level, which involves photons. In QM photons are considered to have a rest mass of 0, so I guess the only answer is photon. Higgs to come?

    • one year ago
  12. DLS
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    Higgs is massless?

    • one year ago
  13. Iamgmg90
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    DLS look into photoelectric effect derivation and compton scattering

    • one year ago
  14. Mashy
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    but you know what?? think of this .. if two photons of light are moving parallel to each other(in vacuum)... if they put force of gravity on each other, then their velocities WOULD CHANGE right.. i don't care how small that change is.. but it would change.. ?? but remember relativity?? light cannot have ANY OTHER speed than C.. in vacuum.. regardless of what crap you do!!.. so they cannot put gravitational force on each other :O hmm.. how is that argument? :O

    • one year ago
  15. Iamgmg90
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    for why it has momentum, no higgs would give more knowledge, it gives mass.

    • one year ago
  16. DLS
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    i know photoelectric effect

    • one year ago
  17. Mashy
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    or maybe not.. you can use general relativity to explain that.. so never mind :D

    • one year ago
  18. DLS
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    The Standard Model's explanation of why some fundamental particles have mass when 'naive' theory says Higgs boson should be massless

    • one year ago
  19. DLS
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    so can we say photon photon and boson boson :O

    • one year ago
  20. DLS
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    @Mashy dude stop showing off relativity in every question of mine when u know i dont understand it :P

    • one year ago
  21. Iamgmg90
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    Photoelectric determines relationship between energy and frequency ... E proportional to (a + bw) where w = angular omentum so E = Hbar(w-w_a) = h(v - v_a) photon rest mass is zero for general relation of energy, so it can be written as E^2 = (m_0*c^2)^2 + p^2c^2 = Hbar^2w^2 and can cancel to momentum p = Hbar * k, where k = w/c (wave number) therefore the momentum of a photo can be given as p = Hbar * k bear in mind wave particle duality, how a wave can have momentum is a toughy, yet quite beautiful

    • one year ago
  22. Mashy
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    wait for @Iamgmg90 something bombastic is on its way.. either that or his computer is stuck :D

    • one year ago
  23. Mashy
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    ok sorry DLS :P.. didn't mean to!

    • one year ago
  24. Iamgmg90
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    Bombastic haha, its just my understanding I hope it shed light on the matter, excuse the pun :P

    • one year ago
  25. DLS
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    guys im a sweet little cute innocent student :3

    • one year ago
  26. DLS
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    simple answers should be awesome :P

    • one year ago
  27. Iamgmg90
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    Trying to word equations in english and failing, I don't think quantum mechanics could be simple hehe, are you a student of physics?

    • one year ago
  28. DLS
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    yes..XIth grade

    • one year ago
  29. Iamgmg90
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    11th grade? I have no idea what that is, I'm English

    • one year ago
  30. Iamgmg90
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    is that high school?

    • one year ago
  31. DLS
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    kinda

    • one year ago
  32. Iamgmg90
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    I think the main part of understand that is knowing planck's constant well

    • one year ago
  33. Iamgmg90
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    & the difference between h and hbar

    • one year ago
  34. DLS
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    yes,ive read about atomic struc

    • one year ago
  35. DLS
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    not hbar

    • one year ago
  36. Iamgmg90
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    its just h / 2pi

    • one year ago
  37. Iamgmg90
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    but not just, very important for its relationship with angular frequency

    • one year ago
  38. Iamgmg90
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    omg sorry in those equations w = angular frequency, not momentum

    • one year ago
  39. DLS
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    \[mvr=\frac{nh}{2\pi}\]

    • one year ago
  40. DLS
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    :o

    • one year ago
  41. Iamgmg90
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    Bohr is far from QM, but orbital win

    • one year ago
  42. DLS
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    anyway,thanks guys! ill go with photon for meanwhile :P and/or bosson

    • one year ago
  43. Mashy
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    from where Bosson came?? bossons have mass :O !!!

    • one year ago
  44. DLS
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    http://prntscr.com/tqp5w

    • one year ago
  45. DLS
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    naive theory \m/

    • one year ago
  46. Mashy
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    so? it still says higg's particle gives mass!

    • one year ago
  47. DLS
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    okay photon :P

    • one year ago
  48. Mashy
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    higg's particle has been discovered hello!??

    • one year ago
  49. DLS
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    oops I cant give medal to myself D:

    • one year ago
  50. Mashy
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    super large hardron collider??

    • one year ago
  51. DLS
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    oout off my syllabus :P

    • one year ago
  52. Mashy
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    geneva switzerland?? .. 7.7TEV??? hello?!?!

    • one year ago
  53. DLS
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    :| thanks everyone

    • one year ago
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