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Alchemy with light shocks physicists
New Scientist ^
| 21 May 03
| Charles Choi
Posted on 05/22/2003 11:25:37 AM PDT by sourcery
click here to read article
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1
posted on
05/22/2003 11:25:37 AM PDT
by
sourcery
To: Ernest_at_the_Beach; Libertarianize the GOP; Free the USA
FYI
2
posted on
05/22/2003 11:26:05 AM PDT
by
sourcery
(The Evil Party thinks their opponents are stupid. The Stupid Party thinks their opponents are evil.)
To: sourcery
Oops. The first sentence got cut, somehow. It starts: "Claims of "unexpected and stunning new physical phenomena" are..."
3
posted on
05/22/2003 11:27:12 AM PDT
by
sourcery
(The Evil Party thinks their opponents are stupid. The Stupid Party thinks their opponents are evil.)
To: sourcery
Scotty,
Arm all PHASER banks and prepare to fire...
4
posted on
05/22/2003 11:28:07 AM PDT
by
Adams
To: Adams
This is no big deal. I made blue paint by mixing yellow and green in kindergarten.
5
posted on
05/22/2003 11:29:12 AM PDT
by
IGOTMINE
(He needed killin')
To: Physicist
Physics ping.
To: sourcery
From computer simulations, the team found that shock waves passing through a crystal alter its properties as they compress it. It's good that they are actually trying to produce this effect in the lab. Because sometimes those computer simulations are not as accurate as the real thing ...
To: IGOTMINE
I don't think so. You can make green paint by mixing yellow and blue.
8
posted on
05/22/2003 11:32:58 AM PDT
by
Cicero
(Marcus Tullius)
To: sourcery
interesting.
To: sourcery
Hope this comes to market faster than superconductivity. this is one of those things I've dreamed about but never thought I'd see. Just goes to show that sometimes reality outpaces science fiction.
10
posted on
05/22/2003 11:36:26 AM PDT
by
js1138
To: sourcery
Cisco folks should find out how to get to the front of the line to patent applications for this new technology.
Could solve some "last mile" problems
11
posted on
05/22/2003 11:38:20 AM PDT
by
G Larry
($10K gifts to John Thune before he announces!)
To: sourcery
"shooting bullets at photonic crystals... would destroy the crystal"
Science writing bump
To: sourcery; *RealScience; *tech_index; Sparta; freedom9; martin_fierro; PatriotGames; Mathlete; ...
13
posted on
05/22/2003 11:44:24 AM PDT
by
Ernest_at_the_Beach
(Recall Gray Davis and then start on the other Democrats)
To: Cicero
I don't think so. You can make green paint by mixing yellow and blue.Yellow and Cyan, specifically.
14
posted on
05/22/2003 11:45:18 AM PDT
by
Monitor
To: sourcery
15
posted on
05/22/2003 11:49:04 AM PDT
by
martin_fierro
(A v v n c v l v s M a x i m v s)
To: sourcery; aruanan
Light has been shifted in frequency at low power by heterodyning techniques in MIM diode structures. There's abundant literature on this.
The most important thing about this article is that it shows light can be frequency shifted by shock waves in a medium. Now apply this knowledge to the big picture - specifically cosmology and the cosmological red shift. The cosmological redshift is based on the assumption that primordal light was stretched (lowered in frequency) by the initial expansion of the universe (and remaining constant in velocity for all time, despite evidence to the contrary). Of course there's exceptions, but cosmologists are fully free to ignore contradictions in their theories. Now supposed instead of the big bang, the light simply passed through shocks waves in cold gases, giving local red and blue shifts. I know this goes against astrological, I mean cosmological science because it is reproducible in the laboratory and doesn't use dark matter or hidden energy or hidden dimensions or virtual particles or unmeasurable quantities but it is worth looking at by scientists.
To: sourcery
Wow, amazing. Wonder what implications this has for laser R&D?
To: sourcery
From computer simulations, the team found that shock waves passing through a crystal alter its properties as they compress it.Vaporware alert. Lots of stuff looks good in simulation, only to fail in the real world.
The team is now collaborating with researchers at Lawrence Livermore National Laboratory to demonstrate the effect.
This should read: "to discover whether there really is any such effect."
Initially they will generate shock waves by shooting bullets at photonic crystals. This would destroy the crystal, but not before the light has had time to shift. Eventually, sound waves should do the job just as well, they say. "It¹s really practical, and potentially even easier to do than with actual shock waves," says Reed.
I wonder why they don't try the sound method first. To bond a piezo to a photonic crystal, shine a laser on it, hook it up to a frequency generator and twiddle the knob sounds like the work of an afternoon.
To: Gary Boldwater
Now supposed instead of the big bang, the light simply passed through shocks waves in cold gases, giving local red and blue shifts.That wouldn't give you the continuous emission spectrum we see in the CMBR. Where's the light coming from in the first place?
To: sourcery
read later
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