Quantum astronomy, 3rd article (SETI site) comment

[berna]

In the third release about Quantum Astronomy there is a reference to the complementarity principle. <br />Although it has been widely accepted and supported by many experiments, in a recent issue of New Scientist there is an article about an experiment that contradicts the principle. <br />In a doulbe slit experiment the path of each photon is measured and there is evidence that the inteference pattern is formed anyway. <br />However this does not rule out most of the space.com Seti article's reasoning. I believe that if it would be possible to make an experiment with gravitational lensisng and a far away quasar as a source, the interference would hold and everything would happen as the photon follows both possible ways for billions of years. It should be like this because the distance between possible virtual paths is not important, and is not a parameter in quantum equations, only the length of each path is significant. <br />However I doubt that this experiment is realistically possible as the time difference can be in the range of weeks or even years and it would be difficult to compensate for it with enough accuracy (fraction of a wavelenght) <br /><br />Edited by berna (12/26/04 08:22 AM)<br /><br />

 

[rogers_buck]

You might want to embelish with a few links. Without them, it would be too much work to figure out the context of your comments.