# Simulation for "paired photons" theory

A project log for EMDrive/satellite

Developing a small fuelless microwave thruster

Paul Kocyla 07/21/2016 at 18:263 Comments

The "paired photon" theory for the EMDrive got me somehow curious.
I dug out my old OpenGL toolchain - it´s years since I touched OpenGL - I will make an interactive visual simulation which shows what would happen if paired photons would electromagnetically cancel each other out and leave the cavity taking momentum with them.
It will be not just an animation, it will be a simulator which throws photons into the cavity and refecets them by the walls. Should two photons be 180° phase shifted, they will not be reflected by the walls and will leave the cavity. In oppose to reality, they will be visible in the simulation, interesting to see which paths they will take depending on the cavity shape.
If it shows plausible results, I´ll create some automatized shape optimization routine to find a shape which emits the most photons to one end of the cavity. Dielectrics will be put into account.
I´m just starting this project beside completeting the EMDrive satellite, so please don´t push me

## Discussions

willemstaal wrote 07/29/2016 at 10:28 point

http://pdg.lbl.gov/2009/reviews/rpp2009-rev-passage-particles-matter.pdf

The probability of photons interacting, especially with  a  photoelectric effect, is related to their energy. Increasing photon energy generally  decreases the probability of interactions (attenuation) and, therefore, increases penetration.

As a rule, high-energy photons are more  penetrating  than low-energy photons.

If this is the case with Microwaves as well, you should think of pushing more power in the unit or use different materials for the frustrum.. Maybe you need a less dense material.. or a less dense material for the small end of the frustrum and a more dense material for the big end (bi-metal frusrum)

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Paul Kocyla wrote 07/30/2016 at 07:45 point

Thanx. Hard paper to digest - it´s some years I saw the university from the inside :-D
I´ll try to understand it.

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biemster wrote 07/31/2016 at 12:29 point

Please take into account that this article is about (detecting) _real_ particles, like particles in an accelerator or gammas used in astronomy coming from far away objects. I don't think the EM field inside the frustum should be considered as real photon's bouncing back and forth.

If I understand the paired photon theory correctly the virtual photons escaping the frustum is much like the forming of Cooper pairs in low temperature superconductors. Two photons with almost equal but opposite wave numbers pair up to form a pair with a very large wavelength. Since the diffraction limit prevents particles to interact with objects smaller than their (half) wavelength, (much like on the beach where large waves are not obstructed by rocks on the sea shores, but small ones are), superconductivity arises when the Cooper pairs have wavelengths larger than the protons in the metal.

When the wavelength of the photon pairs in the frustum are larger than the material of the frustum, they will not see the end plate anymore and exit unimpeded. The angle will bend the EM field such that this will happen more at one side of the frustum than on the other, thus creating a force in one particular direction.

Well that's just my understanding of the photon pair theory. The review of particle physics mentioned by willem is still a good read :) (but please use the most recent version on pdg.lbl.gov)

And as a side note, pushing more power in the unit will not change the photon energy, you would need to change the frequency for that.

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