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When did the Dark Ages begin?

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Ian Dunn
754080.  Fri Oct 22, 2010 1:38 pm Reply with quote

Several billion years ago. Dark ages occur in cosmology.

This is the Wikipedia definition of it:

Quote:
Before decoupling occurs most of the photons in the universe are interacting with electrons and protons in the photon-baryon fluid. The universe is opaque or "foggy" as a result. There is light but not light we could observe through telescopes. The baryonic matter in the universe consisted of ionized plasma, and it only became neutral when it gained free electrons during "recombination," thereby releasing the photons creating the CMB. When the photons were released (or decoupled) the universe became transparent. At this point the only radiation emitted is the 21 cm spin line of neutral hydrogen. There is currently an observational effort underway to detect this faint radiation, as it is in principle an even more powerful tool than the cosmic microwave background for studying the early universe.

 
Untutored Eye
754084.  Fri Oct 22, 2010 1:44 pm Reply with quote

Pretty sure it was a Tuesday.

After lunch.

 
Ian Dunn
754085.  Fri Oct 22, 2010 1:49 pm Reply with quote

I think it was a Thursday. I could never get the hang of Thursdays.

 
nitwit02
754428.  Sat Oct 23, 2010 8:36 pm Reply with quote

No, it was the day that Stephen Harper became Prime Minister of Canada.

 
Ian Dunn
754442.  Sun Oct 24, 2010 2:31 am Reply with quote

nitwit02 wrote:
No, it was the day that Stephen Harper became Prime Minister of Canada.


Why what did he do?

 
Posital
754453.  Sun Oct 24, 2010 4:45 am Reply with quote

How could they know? Unless their timepiece had a backlight...

 
PDR
754462.  Sun Oct 24, 2010 5:16 am Reply with quote

It was definitely last Tuesday - around 15:45BST.

PDR

 
zomgmouse
754505.  Sun Oct 24, 2010 6:11 am Reply with quote

The practice of making enclosures in a certain Indian city is a long-standing one. This is why they are known worldwide as the Dhar cages.

 
suze
754551.  Sun Oct 24, 2010 7:53 am Reply with quote

Ian Dunn wrote:
Why what did he do?


Be an obnoxious politician of the further right, who talks about God rather a lot and in general belongs in Texas rather than in Canada. And become Prime Minister despite less than one quarter of Canadians voting for his party, and only one province actually wanting him as Prime Minister. That's just for starters ...

 
Ian Dunn
754566.  Sun Oct 24, 2010 8:53 am Reply with quote

suze wrote:
Ian Dunn wrote:
Why what did he do?


Be an obnoxious politician of the further right, who talks about God rather a lot and in general belongs in Texas rather than in Canada. And become Prime Minister despite less than one quarter of Canadians voting for his party, and only one province actually wanting him as Prime Minister. That's just for starters ...


Well, at least some people voted for him unlike Gordon Brown.

 
Ion Zone
754700.  Sun Oct 24, 2010 4:22 pm Reply with quote

If I remember, the medieval 'Dark Ages' are actually a myth resultant from nostalgia for the Greek\Roman period. The actual phrase comes from a poem.

 
ali
754704.  Sun Oct 24, 2010 4:43 pm Reply with quote

Ian Dunn wrote:


Well, at least some people voted for him unlike Gordon Brown.


or Winston Churchill.

 
Zebra57
754723.  Sun Oct 24, 2010 5:44 pm Reply with quote

ali wrote:
Ian Dunn wrote:


Well, at least some people voted for him unlike Gordon Brown.


or Winston Churchill.


Churchill did win an election in 1951

http://news.bbc.co.uk/onthisday/hi/dates/stories/october/26/newsid_3687000/3687425.stm

 
PDR
754728.  Sun Oct 24, 2010 6:05 pm Reply with quote

Ion Zone wrote:
If I remember, the medieval 'Dark Ages' are actually a myth resultant from nostalgia for the Greek\Roman period. The actual phrase comes from a poem.


Actually I was under the impression that they were called the dark ages because it was ...ummm...dark!

The tree ring records show it as a period when little growth took place, and the ice-core records show a layer of ash. It has been suggested that it may well have been the consequence of a "mega-volcano" erruption wheich essentially turned out the lights for a while.

PDR

 
nitwit02
754741.  Sun Oct 24, 2010 9:26 pm Reply with quote

Due to the time difference Ian, suze got to answer your question before I got the chance - but, she put it in a nutshell.

 

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