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(Nature)   On March 15th, the world's most powerful laser unleashed the most powerful laser blast in history. I *knew* I felt a great disturbance in the Force last week   (nature.com) divider line 41
    More: Spiffy, National Ignition Facility, The Oregonian, geophysics, disturbances, optics, lasers, national laboratory, Arkansas Democrat-Gazette  
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4561 clicks; posted to Geek » on 22 Mar 2012 at 2:00 PM (2 years ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



41 Comments   (+0 »)
   
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2012-03-22 01:35:48 PM  
That was on my birthday - you're welcome world
 
2012-03-22 02:04:15 PM  
So will it be ready for the Zentradi fleet?
 
2012-03-22 02:07:29 PM  
That's no moon.
 
2012-03-22 02:10:50 PM  
forums.pelicanparts.com

Actual photo of the incident
 
2012-03-22 02:11:07 PM  
3.bp.blogspot.com
 
2012-03-22 02:12:42 PM  
I'm not saying it's aliens, but...

www.badmovies.org
 
2012-03-22 02:17:55 PM  
3.bp.blogspot.com
 
2012-03-22 02:23:56 PM  
mobmg.photobucket.com
 
2012-03-22 02:24:11 PM  
img805.imageshack.us
 
2012-03-22 02:30:15 PM  
...and they didn't blow anything up? What's the use of having a big'ol lazor if you can't obliterate something.
 
2012-03-22 02:31:46 PM  
www.badmovies.org
 
2012-03-22 02:32:07 PM  

Fool0ndahill: ...and they didn't blow anything up? What's the use of having a big'ol lazor if you can't obliterate something.


they couldn't find a shark big enough
 
2012-03-22 02:33:59 PM  
Was it strapped to a shark?
 
2012-03-22 02:36:26 PM  
Nice shooting, Zanthar.
 
2012-03-22 02:37:11 PM  
36 hours between shots?!
Hell, I'm usually good to go after 15 minutes!
 
2012-03-22 02:38:56 PM  
That explains all this popcorn...
 
2012-03-22 02:39:50 PM  
Beware the Ides of March, Dr. Hathaway.
 
2012-03-22 02:59:51 PM  
I knew It was possible to synthesize excited bromide in an argon matrix
 
2012-03-22 03:24:38 PM  

bhcompy: [forums.pelicanparts.com image 439x337]

Actual photo of the incident


Damn you and your 17 seconds!
 
2012-03-22 03:33:43 PM  

daklat2k1: I knew It was possible to synthesize excited bromide in an argon matrix


But its only good for one shot.
 
2012-03-22 03:40:57 PM  
Hey, has anyone posted the shot from Real Genius yet?
 
2012-03-22 03:50:24 PM  
can someone please put a 2 mega-joule laser into some sort of context for us non-electrical engineers?
 
2012-03-22 03:57:58 PM  
doesn't that photo in the article look like the engine room on the Event Horizon?

Keeping my eyes......
 
2012-03-22 04:01:23 PM  
Pfft. amateurs

images.wikia.com
 
2012-03-22 04:02:23 PM  

SmellsLikePoo: can someone please put a 2 mega-joule laser into some sort of context for us non-electrical engineers?


You can now do a powerpoint presentation, from the moon
 
2012-03-22 05:20:33 PM  

SmellsLikePoo: can someone please put a 2 mega-joule laser into some sort of context for us non-electrical engineers?


The energy used by 5 100w lightbulbs (or anything that uses 500w) in one hour, put out in a billionth of a second

/or something like that
 
2012-03-22 05:22:23 PM  

SmellsLikePoo: can someone please put a 2 mega-joule laser into some sort of context for us non-electrical engineers?


1 mega-joule = 0.277777778 Kilowatt-hour.

So two is like.... almost twice as much.
 
2012-03-22 05:25:42 PM  

SmellsLikePoo: can someone please put a 2 mega-joule laser into some sort of context for us non-electrical engineers?


Is it more or less than 1.21 jiggawatts?
 
2012-03-22 05:42:36 PM  

old_toole: SmellsLikePoo: can someone please put a 2 mega-joule laser into some sort of context for us non-electrical engineers?

1 mega-joule = 0.277777778 Kilowatt-hour.

So two is like.... almost twice as much.


It's a little less than .05 liters of fuel oil.
 
2012-03-22 06:35:52 PM  
I get that this was a high energy burst of 2 MJ, but what time frame was it delievered in? I mean this is a PW class laser, right?
 
2012-03-22 08:39:45 PM  

SN1987a goes boom: I get that this was a high energy burst of 2 MJ, but what time frame was it delievered in? I mean this is a PW class laser, right?


according to a quick google search, the pulse duration is ~5 us.

(2E6 J) / (5E-6 s) = 4E11 Watts.

so - roughly 10,000,000,000 incandescent light bulbs of power in that period.

in other words, a metric farkton of energy delivery.... cheers
 
2012-03-22 09:11:21 PM  
3.6E6 J = 1 kWh

so, the laser's 2E6 J over a period of 5us is approximately 0.55 kWh.
so, roughly a nickel or dime's worth of electricity.

2E6J in 5us also translates, if continuous, to 1.44E15 kWh

according to a quick google search, the total energy consumption in NYC in 2005
was 150E9 kWh (new window).

so the laser's energy of 2 MJ in 5us scales to a factor of ~10000 more than the electrical energy that NYC uses.

cheers
 
2012-03-22 09:28:30 PM  

wjllope: 2E6J in 5us also translates, if continuous, to 1.44E15 kWh


rats. messed up *badly*. I suck.

laser: (2E6 J) / (5E-6 s) = 4E11 Watts.
NYC's 150E9 kWh = 150E12 Wh

150E12 Wh / 4E11 W = 375 h

so the laser's energy is the same as the total electrical energy used by all of
NYC in ~10 seconds.

still kind of cool.
 
2012-03-22 11:19:53 PM  

PsyLord: So will it be ready for the Zentradi fleet?


i173.photobucket.com

As long as we have Max on our side, we'll be ok.
 
2012-03-22 11:37:52 PM  

wjllope: SN1987a goes boom: I get that this was a high energy burst of 2 MJ, but what time frame was it delievered in? I mean this is a PW class laser, right?

according to a quick google search, the pulse duration is ~5 us.

(2E6 J) / (5E-6 s) = 4E11 Watts.

so - roughly 10,000,000,000 incandescent light bulbs of power in that period.

in other words, a metric farkton of energy delivery.... cheers


Wait...then how is this the most powerful laser in the world? I think UT has one that goes above 1E15 W. Is the metric in Energy per burst?
 
2012-03-23 12:17:20 AM  
Educate thyself. (new window)

I have toured it a few times on family days. Pretty impressive. The most interesting part to me is the seed laser is smaller than a pencil and has less power than a laser pointer. The flash panels amplify it.

Sadly now that it is in production there will be no more tours.

Next up is LIFE. (new window)
 
2012-03-23 01:51:21 AM  

bhcompy: [forums.pelicanparts.com image 439x337]

Actual photo of the incident


flaminio: I'm not saying it's aliens, but...

[www.badmovies.org image 400x225]


I can see that everything is covered here.
 
2012-03-23 08:35:16 AM  

SN1987a goes boom: Wait...then how is this the most powerful laser in the world? I think UT has one that goes above 1E15 W. Is the metric in Energy per burst?


UT's petawatt laser is indeed claimed to be the most powerful in terms of Watts (~200J, ~100 femtoseconds -> 2E15 W)...
But TFA calls the NIF laser the largest... It would be the most powerful if the metric was J.s (units of action), or the number of beams...

both are pretty damned cool... cheers
 
2012-03-23 04:15:50 PM  

wjllope: SN1987a goes boom: Wait...then how is this the most powerful laser in the world? I think UT has one that goes above 1E15 W. Is the metric in Energy per burst?

UT's petawatt laser is indeed claimed to be the most powerful in terms of Watts (~200J, ~100 femtoseconds -> 2E15 W)...
But TFA calls the NIF laser the largest... It would be the most powerful if the metric was J.s (units of action), or the number of beams...

both are pretty damned cool... cheers


True that.
 
2012-03-23 05:00:18 PM  

SN1987a goes boom: True that.


BTW - re: your handle....
I was an undergraduate the the university of michigan and was making beer money changing tapes and running simple analysis tasks with the IMB group there.

I still remember clearly the excitement when the major players in this group were all giddy because the IMB detector saw the neutrinos from SN1987A. I can still picture the plot in my head even now. Eight little X's (it was the kind of plot a line printer makes, not the polished postscript that modern analysis codes now make) near the bottom of the plot frame...

refs:
Neutrinos from SN1987A in the IMB detector, Van Der Velde, J. C. et al. (IMB), Nucl. Instrum. Meth. A264 (1988) 28-31.
Observation of a neutrino burst in coincidence with supernova SN1987A in the Large Magellanic Cloud, Bionta, R. M. et al. (IMB), Phys. Rev. Lett. 58 (1987) 1494.

Jan Van der Velde was my boss... good memories there - every time I see your handle I'm reminded of it... cheers
 
2012-03-24 04:11:24 AM  
So, was this being played in the control room?
 
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