Lasers. Very cool and exciting toys. They have also revolutionized science and technology. Through a comparatively simple process, photons are bounced backward and forward within an optical cavity. Stimulated emission from the quantum states of the material within the cavity causes more and more photons to be generated. Eventually a threshold is reached and laser emission results, producing a collimated beam of a defined wavelength.
So where do black holes come into all this? Well, it is theorized that black hole event horizons produce radiation. Hawking radiation, although not yet proven, is probably responsible for the only emission from a black hole. It may even cause the black hole to evaporate. But what if this radiation could be used in the ultimate laser cavity? Some Scottish researchers think it might be possible… in theory…
Yes it sounds ridiculous when we read: “Synthetic Black Hole Event Horizon Created in UK Laboratory” (ahem, one of mine!), but it isn’t that far from reality. Drawing the reader’s attention to the word “synthetic”, we are obviously not talking about a real, bona fide black hole sitting on a desk in some professors lab causing all sorts of havoc to the space-time in some university campus! We are referring to a black hole “analogue”, or more precisely an event horizon analogue.
In science terms an analogue is used to simulate a “thing” far more complex but demonstrates the physics behind that “thing” accurately all the same. Looking at the simulated Mars missions, we currently have a “Mars base”, the Mars Desert Research Station (MDRS) running in the Utah Desert, where a group of people get sealed away from the rest of the world for months on end. All in the hope to simulate what it is like to live on Mars. This is commonly known as a Mars habitat analogue.
Black hole or event horizon analogues aren’t for people to live in. In the case of the laser experiment I mention in the above article, the event horizon is simulated when two pulses of laser light of two different wavelengths are fired through an optical material. The first travels slowly, the second faster. As the first laser changes the properties of the optical material behind it, the second laser pulse is slowed down. The second pulse can never overtake the first pulse; it is effectively slowed to a stop (relative to the first pulse).
Sound familiar? This is a basic simulation of how an event horizon works as light tries to escape a black hole – it can’t. Hey presto! We have a simulated black hole, or as I’d put it, a “synthetic black hole”.
So, experiments are being carried out on laser light to see how the event horizon within an optical material acts. Could it be possible to demonstrate things like Hawking radiation? Could particles, or photons for that matter, appear to jump out of the leading edge of the horizon? I’m not totally convinced this can be proven, but then again the mathematics may prove otherwise.
OK, so there might be a possibility that an event horizon could be demonstrated in the laboratory using lasers as a method to simulate a black hole. Turning this idea around, could event horizons and our good friend Hawking radiation combine to create a type of laser emission itself?
I’ve been grappling with this publication by Ulf Leonhardt and Thomas Philbin (“Black Hole Lasers Revisited”) in a research group in St. Andrews University, Scotland, for a few days now. The more I read it, the more amazed I get. But I also become more confused, the theoretical physics behind the concept of a “black hole laser” is, as you’d expect, top drawer. While I’ve been compelled to write about it, I’ve been reluctant as it is tough to digest. I’m going to give a very rough rundown about some of the conclusions. If you’re feeling brave, dive in, a preprint is waiting for you on arXiv…
Using a Bose-Einstein condensate, a rather exotic substance itself, sonic waves could be generated to simulate an event horizon. Where one horizon is apparently pretty useless for laser generation, two horizons, side by side actually turns out to be fairly useful. In this case, a black hole horizon and a white hole horizon are required. A white hole is very similar to a black hole (i.e. in cosmology, they will both have the same gravitational influence on matter – matter is attracted – and will therefore be indistinguishable to observers), but there are some very subtle differences at the event horizons of both.
In this analogue substance, sonic waves that travel across the white hole horizon will have a negative and positive frequency component. After some blue shifting and red shifting (increase in frequency and decrease in frequency, respectively) on each “bounce” between horizons, the product waves will have greatly increased in amplitude. In fact, theoretically, the process is exponential, simulating stimulated production of waves, similar to a laser process.
The big thing to come out of this paper is that it is not advocating bouncing radiation between a cosmological black and white hole (if you think you know how this might be done, I’d love to get your theory in the comment section below), nor is it suggesting stimulated generation of Hawking radiation from an actual black hole event horizon, it is using a theoretical model for a possible situation. Sonic wave production in a Bose-Einstein condensate perhaps isn’t that far out of the realms of possibility, using such an analogue may even prove or disprove the existence of Hawking radiation without even looking into the horizon of a stellar black hole…
…fortunate really…
astroengine.com 
I just uploaded NetNewsWire for iPhone 1.0.2 is expected to go back into the review and the App Store quickly
Perhaps everyone’s name starts with the same letter or maybe they have
forbidden the existence of females(which would have had to happened
after Kari’s birth, if she was born in the fantasy land).
Riviera Maya Jazz Festival 2011
Thanks, I love it! Unfortunately though I cannot seem to find where to
alter Twitter to my account (the main widget near the top) and also how
to set the Mini Updates, I have scanned several times and I cannot find
those parts!
Personal
Injury Solicitor
Mind control technologies are weapons which use drugs, electronic microchip implants, nanotechnologies, microwaves and /or electromagnetic waves to subvert an individual’s sense of control over their own thinking, behavior, emotions or decision making by attacking the brain and nervous system.
compatible ink
This is one the most high quality blogspot theme I every seen with
featured content with slide show. But on the same hand its very complex
to setup at frist. Any way Nice work…
Personal
Injury Solicitor
The worst thing that could happen is getting rejected, seriously.
But if you never ask her, you’ll never know. Trust me, you’ll regret
much more if you don’t ask her out, than if you do, regardless of the
outcome.
iPhone Wallpaper
it’s awful! there are riots all over england and in london it’s the
worse part. there’s 200 youths in my area attacking the streets and
there’s a fire near my house 😦 i can’t leave my house, because i’m
scared i will get mugged and attacked. these thugs are looting shops and
stealing things, they’re attacking innocent people and mugging them and
making them strip – taking their clothes. it’s spreading all over
england and the situiation is getting worse.
Playa del Carmen Activities
Eventually a threshold is reached and laser emission results, producing a collimated beam of a defined wavelength.medical billing and coding resource
Go from the starter beach and go to Kelan Village. There should be a house near a large soup barrel.
boat transport
Eventually a threshold is reached and laser emission results, producing a collimated beam of a defined wavelength.medical billing and coding guide
havoc to the space-time in some university campus! We are referring to a
black hole “analogue”, or more precisely an event horizon analogue.
It’s definitely not about money. It’s
so easy to please your parents and go to the commencement ceremony. One
day out of your life and for them a memory of a lifetime. Parents have
about 18-20 years raising you and living with you.
Medical Equipment Auctions
ultimate laser cavity? Some Scottish researchers think it might be possible… in theory…
ultimate laser cavity? Some Scottish researchers think it might be possible… in theory…
nice article, It,s very useful for my study
thanks for sharing this article
You need to work on the way you project your self confidence. There’s
nothing wrong with being the nice guy at a party, however as you take
control of the situation you can steer it towards the desired end.
Electronic Cigarette UK
This is my first time i visit here. I found so many entertaining stuff in your blog, especially its discussion. From the tons of comments on your posts, I guess I am not the only one having all the enjoyment here! Keep up the excellent work. http://www.rochett-lounge.com
create a free blog
Very nice blog and useful information we keep visit again.
http://1bl.co/
You need one photo transistor,one driver stage,one
relay,one diode,one resistor. Use the normal open contact parallel with
the driver transistor C-E. The rest of circuit is simple,you should
able to figure it out or improve the range by adding more stage.Europa Casino
I do think this idea is neat. I did not know there was a white hole
until I read this blog. I have learned something and I thank you for
that. I am amazed at the use of lasers and how they work and how they
are profiting some people.
I’m looking to start my own blog soon but I’m having a difficult time
choosing between BlogEngine/Wordpress/B2evolution and Drupal. The reason
I ask is because your design and style seems different then most blogs
and I’m looking for something completely unique. Thanks
I would like to express my appreciation
of your writing skill and also ability to make audience, see the whole
thing to the end. I would really like to read more of your blogs and to
talk about my thoughts with you. I’ll be your frequent visitor, that’s
for certain.
What a safeway insurance..
I would like to express my appreciation of your writing skill and also
ability to make audience, see the whole thing to the end. I would really
like to read more of your blogs and to talk about my thoughts with you.
I’ll be your frequent visitor, that’s for certain.
Considerably, this post is really the sweetest on this notable topic. I
harmonise with your conclusions and will thirstily look forward to your
incoming updates. Saying thanks will not just be sufficient, for the
phenomenal clarity in your writing. I will directly grab your rss feed
to stay informed of any updates.
Thanks for the post! I found this interesting and informative. I
definitely having fun with every little bit of it and I’ve you
bookmarked to check out new stuff you weblog post.
Thank you for another great article. Where else could anyone get that
type of information in such a perfect way of writing? I have a
presentation next week, and I’m on the look for such information.
I can see that you are putting a lots of efforts into your blog. Keep
posting the good work. Some really helpful information in there.
Bookmarked. Nice to see your site. Thanks!
Thanks for the nicely written article. Despite the fact that I’m able to
understand your arguments, I need to say that I do not fully agree with
them all. I would personally love to discuss the topic further with you
if you have the time?
Awesome read! A tip though – you could think about submitting your news
posts to reddit – My guess is the community there should enjoy your
articles – also if you’re lucky it’ll mean more exposure.
Really i am impressed from this post. The person who created this post
is a genius and knows how to keep the readers connected.Thanks for
sharing this with us. I found it informative and interesting. Looking
forward for more updates.
This is really a Super knowledge gaining news and all thanks to google
search engine get me on here. I liked reading your writing and added to
the bookmarks. The points you tried to put up was clearly
understandable.
Your
blog is acquainted. Thanks for keep clued-up about the Do follow. Do follow
blogs are very hard to find. I like your blog very much. For more information I
will be in touch.
well..This is nice post even the whole blog is rocking…I like this
blog and recommend this blog to those people who are interested in
reading some nice stuff… Guys you doing great..please keep it up and in
making us so pleased with your amazing material..Thanks
Very informative and helpful post. You have good command on the topic and have explained in a very nice way. Thanks for sharing.
well, i does not Commentate to blogs but this post is really impress to
me and that,s why i can not stop my self to say good to this really
good job and i should wait for your new post thanks.
Thank you for another essential article. Where else could anyone get
that kind of information in such a complete way of writing? I have a
presentation incoming week, and I am on the lookout for such
information.
Wow.. Great post… This tool sounds amazing… I love this blog… Thank
you so much for sharing this kinda amazing stuff… You guys are doing
great great… I wish you best of luck.. Thanks.
The Best Option SEO Services
http://www.3in1seoservices.com
nice share
http://ceritagita.com/resep-masakan/resep-masakan.html
Who sits around and thinks about this stuff? Was still pretty cool.
This is the right blog for anyone who wants to find out about this topic. You realize so much its almost hard to argue with you (not that I actually would want…HaHa). You definitely put a new spin on a topic thats been written about for years. Great stuff, just great!
local gossip
This is the right blog for anyone who wants to find out about this topic. You realize so much its almost hard to argue with you (not that I actually would want…HaHa). You definitely put a new spin on a topic thats been written about for years. Great stuff, just great!
local gossip
Hello, I think your site might be having browser compatibility issues. When I look at your website in Safari, it looks fine but when opening in Internet Explorer, it has some overlapping. I just wanted to give you a quick heads up! Other then that, very good blog!Event planning
I’ve read through a number of the articles in your website , and I love the way you blog. I included it to my favorites blog site list and will also be checking quickly. sous vetements
The topic that you have discussed in the post is really amazing, I think now I have a strong hold over the topic after going through the post. I will surely come back for more information.Personal Injury Ireland
Magnificent post, very informative. I wonder why the other specialists of this sector do not notice this. You must continue your writing. I’m confident, you have a huge readers’ base already!
Botiquin
http://www.botiquin-de-primeros-auxilios.es/
This is a lion brand pattern that is free, but you need to register to
use the site. If the bobbles are too far apart, I am sure you can modify
the pattern.
betsson casino
Who sits around and thinks about this stuff? Was still pretty cool.PCH Games
This is my first time i visit here. I found so many interesting stuff in your blog especially its discussion. From the tons of comments discount oris watches on your articlesbustier
I think the formula needs more revisions… but it seems understandable. breaking news
I must tell you I am impressed. Very seldom do I encounter a blog that’s
both educative and entertaining. Just want to let you know that you
have most definatly hit the nail on the head. Your thought is excellent.
Thx is all I can say .
[…] that initial sales were already high, this shouldn’t really come as a surprise as it continues to be hard to just walk into an Apple Store or Best Buy and find the exact model of iPad that you […]
i wish to understand a lot more about this because it in fact catches my attention. Keep on posting useful facts about this dude! Thank you so considerably for sharing.Cuff links
Like other leading app developers, NewsGator overhauled much of its application for the iPad. The new NetNewsWire interface takes great advantage of the iPad screen, which makes for a better reading experience of downloaded articles and blog posts.Toddler Halloween Costumes
In NSW Australia lasers over 1mW are banned in public, though available.
I don’t know if you will run into Homeland Security problems if you
build a really powerful laser.
semi truck financing
Well first of all he will be getting a pension from the Fire Service,
plus his pension from the state, and if he is claiming more from other
benefits he should be reported. Some people are never satisfied and do
everything to salt the system.
used semi financing
Yes mate you’re totally right about it! Most of these people are pretty smart by the way! SEO experts academy
Provided us with your blog Valuable information to work with. Thanks a lot for sharing. Keep blogging. [url=http://www.howtogetyourexbackmym3.com] Get your ex boyfriend back[/url][url=http://www.howtogetyourexbackmym3.com] Get boyfriend back[/url][url=http://www.howtogetyourexbackmym3.com] How to get your ex back[/url][url=http://www.howtogetyourexbackmym3.com] Get your ex boyfriend back[/url][url=http://www.howtogetyourexbackmym3.com] Get boyfriend back[/url][url=http://www.howtogetyourexbackmym3.com] How to get your ex back[/url]
this is one great post really , altough is kinda hard for me to understand these things lol click herehref=”http://www.yahoo.com”>here
you got some point but still creating a “synthetic blackhole” still has so many factors you need to take into consideration. but still nice posts.
owner of lancome mascara
I was very pleased to find this web-site.I wanted to thanks for your time for this wonderful read!! I definitely enjoying every little bit of it and I have you bookmarked to check out new stuff you blog post.
—
http://www.televishowz.com
cool and very interesting things you write here. http://www.x6cam.com or http://www.6xcam.com ?
http://www.unlockiphone5x.com
There are some interesting points in time in this article but I don’t know if I see all of them center to heart. There is some validity but I will take hold opinion until I look into it further.