Misconceptions from bad use of language was Re: Two slit experiment
in [Physics]
|
Prev: Latest climate climbdown: the Royal Society reviews its statements on global warming
Next: In history the fact that the moon fits over the sun was proof of God
From: rick_s on 29 May 2010 17:48 On 5/29/2010 22:25, rick_s wrote: > If the universe is expanding, then light waves are shrinking into the > past, we can use a microscope to look at the small things like these > photons and we use a giant orange telescope to look at these tiny > photons from 13 billion years ago. > Do you realize what this means? If you go outside and it is pitch black, it is because the photons that are all around you are so tiny you can't see them. Well maybe but if, you look up at the night sky, you can't see old photons from galaxies because they are too small. Until you magnify them with a telescope. Now reverse that and it is not symmetrical. You have a transverse wave, shrinking into the past, its not expanding into the future. Its a sine wave into the now. It goes blue, ultraviolet to gamma and ?
From: rick_s on 29 May 2010 18:02 Ok, so we look back in time through a telescope I suppose the big question is when we look at pond water under a microscope, are we also looking back in time?
From: rick_s on 29 May 2010 18:35 On 5/30/2010 6:19, Sam Wormley wrote: > On 5/29/10 2:41 PM, rick_s wrote: >> What about the permittivity and permeability of free space? I think >> there must be some minute drag if for no other reason then perfect >> uniform motion is impossible in a curvy non-Euclidean universe. > > What about permittivity and permeability of free space? > http://en.wikipedia.org/wiki/Permittivity > > Think about what a straight line is in curved spacetime. > http://en.wikipedia.org/wiki/Geodesic Well as long as its a geodesic, but what about currents and turbulence and frame dragging etc. Between galaxies it is like a spiderweb. And a spiral within galaxies and probably in black holes as well. I think in fact we will find that if you could see dark energy in this solar system, then you would see that the planets are sitting on giant waves. Maybe in a trough, tilting their axis, or riding the crest. Caused by the sun. Since it has a deep gravity well, it has to have the opposite force the cosmological constant or dark energy to offset that.
From: Sam Wormley on 30 May 2010 12:30 On 5/30/10 5:00 AM, mpc755 wrote: > When a lightning strike occurs at A/A' and B/B' in Einstein's train > gedanken the light waves move with respect to the aether.... Oops! What aether? Light propagates at c for all inertial observers!
From: Sam Wormley on 30 May 2010 12:33
On 5/29/10 4:48 PM, rick_s wrote: > If you go outside and it is pitch black, it is because the photons that > are all around you are so tiny you can't see them. The human eye is only sensitive to photons with wavelength roughly 400-700 nm. From the quantum mechanical perspective, 1. photons are emitted (by charged particles) 2. photons propagate at c 3. photons are absorbed (by charged particles) Photon momentum p = hν/c = h/λ Photon Energy E = hν |