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Author Topic:   The accelerating expanding universe
lyx2no
Member (Idle past 4742 days)
Posts: 1277
From: A vast, undifferentiated plane.
Joined: 02-28-2008


Message 20 of 149 (557555)
04-26-2010 4:39 PM
Reply to: Message 19 by ramoss
04-25-2010 1:34 PM


Dark Energy ≠ Casimir Effect
The Casimir effect is caused by there being a greater, net electromagnetic field external to the two, closely spaced plates due to the internal exclusion of virtual photons with wave lengths longer than the distance between the plates.
What would be the analog for the plates, the space between the plates and the space outside the plates in the open Universe?

"Mom! Ban Ki-moon made a non-binding resolution at me." Mohmoud Ahmadinejad

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 Message 19 by ramoss, posted 04-25-2010 1:34 PM ramoss has replied

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 Message 21 by ramoss, posted 04-27-2010 12:42 AM lyx2no has replied

  
lyx2no
Member (Idle past 4742 days)
Posts: 1277
From: A vast, undifferentiated plane.
Joined: 02-28-2008


Message 22 of 149 (557731)
04-27-2010 6:24 PM
Reply to: Message 21 by ramoss
04-27-2010 12:42 AM


Re: Dark Energy ≠ Casimir Effect
But electromagnetic fields don't know space isn't smooth. The shortest route for a photo from one crest to the next is under the trough. It can't travel in what the common mental model of 'rough' space looks to be a straight line. Take Cape Cod as an example. For a landlubber the shortest distance between Plymouth Rock (Plymouth, MA) and Pilgrim Monument (Provencetown, MA) is 76.1 miles, while for a mariner it only 21.9 knots (25.2 miles). Electromagnetic fields are spacelubbers and don't transect the non-space.
Plus that, the excluded virtual photons in your model would have to have wavelengths less than 10-30 cm. That implies a mass equivalence greater than that of the bananas eaten daily in that coal-scarred city where children play without despair (30,000 lbs.)
AbE: That first sentence is really badly worded. If ya'll can find your way to ignoring it it would be greatly appreciated.
Edited by lyx2no, : No reason given.

"Mom! Ban Ki-moon made a non-binding resolution at me." Mohmoud Ahmadinejad

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 Message 21 by ramoss, posted 04-27-2010 12:42 AM ramoss has replied

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 Message 23 by cavediver, posted 04-28-2010 3:39 AM lyx2no has replied
 Message 24 by ramoss, posted 04-28-2010 12:26 PM lyx2no has not replied

  
lyx2no
Member (Idle past 4742 days)
Posts: 1277
From: A vast, undifferentiated plane.
Joined: 02-28-2008


Message 26 of 149 (558098)
04-29-2010 8:07 PM
Reply to: Message 23 by cavediver
04-28-2010 3:39 AM


128 Bit Encryption
Oh dear - I thought it was actually the best (most understandable) bit
The reason I second guessed myself was that I could just hear the likes of you reminding me of lensing or some such. I meant to get around to explaining myself before the day was done but got busy again. Anyway, what I meant was that the fields follow the shape of space never encountering an edge that they might press against. Adding here that electromagnetic fields don't press against space at all, at all. A photon wouldn't get too far if it had to push space out of its way.
Further, as I was calculating the energy of a photon with a wave length of 10-28 meters I ran through the value-units: eV, Joules, Kelvin, Wattever I discovered it had a value right at 30k when pounds were the unit, which brought to mind the folk song 30,000 pounds of bananas. I figured if anyone was curious they'd google the coal-scarred city. That's what I do instead of scratching my head now-a-days.
And knots are a velocity, not a distance - nautical miles are abbreviated to nautical miles
And what's worse is that I know that.
Edited by lyx2no, : spelink.

"Mom! Ban Ki-moon made a non-binding resolution at me." Mohmoud Ahmadinejad

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