1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Double Slit Experiment

  1. Jan 25, 2014 #1
    I was reading about the double slit experiment, and had an idea. Can anyone tell me if there is a test which negates this idea - or if someone has proposed/proven it.

    Say the photon goes through one slit, but a super small amount of energy (currently not possible to recognize as being detected) takes all other paths (in a wave pattern of the direction the photon is going) - somewhat "slung" off of the photon. That energy can collide with the photon on the other side of the slit, altering its path just like a wave does.

    The act of observing absorbs that slung off energy (however we didn't detect that we observed it because it was so small). So, observing causes that tiny wave pattern energy to be absorbed, but observing doesn't absorb the photon - and the photon goes through the slit in a straight line and hits the wall like a particle. When we don't observe, the remaining "slung" off energy does go through the slit in a wave pattern and affects the course of the photon.

    Larger objects would be to big to be affected by this tiny energy that is "slung" off and doesn't experience the affect and never seems to experience this wave diffraction.

    If that's the case - it can remove a lot of the mystery of "when observed the photon chooses a slit" kind of thinking. Instead, when observed the slung off wave of tiny energy particles are absorbed and don't affect the photon.

  2. jcsd
  3. Jan 25, 2014 #2


    User Avatar
    2017 Award

    Staff: Mentor

    That sounds a bit like the De Broglie–Bohm theory. The observations are the same, but the description is different.
  4. Jan 25, 2014 #3
    Thanks MFB - I've been reading about that and Bohmian Mechanics. It is a very good explanation that -in my mind- fits better than some of the *mysterious* parts of Quantum Mechanics.

    Hopefully, some of these theories will be proven or disproven through future testing.
  5. Jan 26, 2014 #4


    User Avatar
    Staff Emeritus
    Science Advisor

    By what mechanism is this energy that is "slung" off the photon being transferred? Other photons? Note that energy is not a substance and requires something to transfer it from one place to another.
  6. Jan 26, 2014 #5


    User Avatar
    Science Advisor
    Gold Member
    2017 Award

    That question only needs to arise if the photon is assumed to be localised in space. If one accepts that 'a photon' exists in all space, then it doesn't need an extra cloud of anything around it.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook