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DLS

  • one year ago

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

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  1. DLS
    • one year ago
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    @experimentX @Mashy

  2. Mashy
    • one year ago
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    photons? :P

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

  4. DLS
    • one year ago
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    timing:D

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

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

  7. Mashy
    • one year ago
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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

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

  9. Mashy
    • one year ago
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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

  10. DLS
    • one year ago
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    lol

  11. Iamgmg90
    • one year ago
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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?

  12. DLS
    • one year ago
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    Higgs is massless?

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

  14. Mashy
    • one year ago
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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

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

  16. DLS
    • one year ago
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    i know photoelectric effect

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

  18. DLS
    • one year ago
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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

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

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

  21. Iamgmg90
    • one year ago
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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

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

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

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

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

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

  27. Iamgmg90
    • one year ago
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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?

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

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

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

  31. DLS
    • one year ago
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    kinda

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

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

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

  35. DLS
    • one year ago
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    not hbar

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

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

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

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

  40. DLS
    • one year ago
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    :o

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

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

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

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

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

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

  47. DLS
    • one year ago
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    okay photon :P

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

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

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

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

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

  53. DLS
    • one year ago
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    :| thanks everyone

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