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Posted: Mon Apr 14, 2008 3:24 pm
by valis
So did you pay the $10,000 to get access to all of the answers?
lol
Posted: Tue Apr 15, 2008 3:34 am
by spacef
anyone interested in saving money and universology should get immediately the excellent series The universe (season 2) (showing on History channel ("H")
http://www.history.com/minisites/universe
There you will find the absolute latest information and discoveries that bring the horizon of understanding the true nature of the universe even further.
It is better that you are interested in the subject or you will miss approxiately 90% of what is explained (for the masses anyway, but if you have culture in stuff like black matter and relativity, you get much more from it).
it explains well the doepler effect and phase shifting and how light travels, so you could get refund of your "space mirror" theory.
well, just to save you the dollars and provide some "real" interesting material

and it will help the producers to make a few extra episode for when i do get the dvd...

Posted: Tue Apr 15, 2008 10:04 am
by BingoTheClowno
So how deep do they go in those Universe series Spacef?
The Doppler frequency shift effect was known for decades. I don't know what you mean by light phase, maybe you mean light's frequency?
Posted: Tue Apr 15, 2008 12:03 pm
by at0m
BingoTheClowno wrote:The Doppler frequency shift effect was known for decades. I don't know what you mean by light phase, maybe you mean light's frequency?
Light has a short wavelenght. The common practical use of the phase shift of (laser-) light is used in
inertial navigation systems, essential in space flight and widely used in aviation.
At greater speeds/distances, in analogy to sound, the doppler effect with light influences the frequency.
In addition to the series mentioned by spacef, which is a bit superficial though entertaining to my taste, here's 2 items I found very well made:
Looking at this complex, near abstract mathematical matter from different angles, and hearing different explanations helped me to get a good idea (i think;) of what these theories mean. Just reading and clicking through related topics at Wikipedia can be quite revealing too!
Looking forward to get more and better insights,
at0m.
Posted: Tue Apr 15, 2008 3:18 pm
by wayne
Posted: Tue Apr 15, 2008 3:27 pm
by BingoTheClowno
Well, the Doppler effect shifts the
frequency of a signal not its phase. The classic example is the moving train sounding its horn. As the train passes an observer the horn changes its pitch or frequency, the horn's sound frequency appears to decrease.
Similarly, stars emit light with the wavelength between 400-750nm (that is actually the distance between the peaks of the waves) with frequencies between 700 and 400 TeraHerz.

Stars moving away from us (Earth) are appearing to us redish, which means that their visible light frequency is decreased while their wavelength (which is inversely proportional to frequency, frequency= speed of light/lambda) is increased and shifted into the red section.
Posted: Wed Apr 16, 2008 3:20 am
by wayne
Word, brother stardust

Posted: Wed Apr 16, 2008 4:50 am
by astroman
not the kind of
cosmic debris Zappa was singing about - but the topic's title that is...
cheers, Tom
Re: The spacemirror mystery
Posted: Thu Apr 17, 2008 12:22 pm
by bosone
it is very difficult, nowadays, to find such an amount of CRAP alltogether!!

Posted: Thu Apr 17, 2008 12:39 pm
by pollux
valis wrote:So did you pay the $10,000 to get access to all of the answers?
lol
pay me a couple of beers and I'll tell you twice the truth for much cheaper

Posted: Thu Apr 17, 2008 12:40 pm
by Neutron
If aliens are smart enough to monitor or visit humans, I am sure they are also smart enough to know that visiting here would be a huge mistake.
Much like visiting the person standing on the corner talking to his imaginary friend and giving him a gun.