The discussion centers on a particle resonance experiment related to gravitational time dilation, specifically referencing the Pound-Rebka experiment conducted in the 1970s or 1980s. The experiment demonstrated that raising one group of resonating particles by 20-30 meters (60-90 feet) was essential to observe frequency differences due to time dilation effects. The necessity of vertical distance is attributed to the dependence of gravitational time dilation on altitude, which cannot be replicated in a horizontal setup.
PREREQUISITESPhysicists, students of gravitational physics, and researchers interested in experimental methods related to time dilation and resonance phenomena.
What was the conclusion? Some kind of detection of cosmic rays?MagisterMomentum said:TL;DR Summary: I'm looking for the experiment I forgot it was exactly.
As above: there was, I believe some kind of particle resonance experiment: it doesn't work when the level of resonating particles was the same, but raising part of it up by 20-30m (60-90ft) does the job. Could anyone remind me what it was? Thx.
No, it was completely 'earthly local' experiment. And I believe it was done on some US university or official institute connected to it. And I do not remember the time, but I believe it was done in '70s or '80s of 20th century... But I'm not sure finally.pines-demon said:What was the conclusion? Some kind of detection of cosmic rays?
Oh, yeah! --- i believe we are very close, if not even at the point! --- could somebody tell me in short, why this vertical distance was necessary to fulfill the experiment? There was something about energy, it means the vertical distance creates necessary conditions impossible to fulfill in the horizontal plane: so why it was so? Or maybe it was another experment, but in some sense similar?Ibix said:Sounds a bit like Pound-Rebka, which detected gravitational time dilation. I wouldn't say it wouldn't work when the two parts were at the same level, though. It would correctly detect no time dilation.
Gravitational time dilation depends only on altitude, so you would only see a difference in frequencies when one group of atoms was at a different height from the other and therefore time dilated with respect to the other. You can do the experiment with both groups of atoms at the same height, and you would see no frequency difference.MagisterMomentum said:somebody tell me in short, why this vertical distance was necessary to fulfill the experiment?