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Post subject: Cool...
 Posted: 12.11.2011 00:23
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Moderator
Joined: 14.11.2007 Posts: 1039
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Post subject: RE: Cool...
Posted: 12.11.2011 00:37
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Bibliostatus Rex
Joined: 13.07.2010 Posts: 1460
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| I've seen that shot before, but I didn't know it was Edgerton or how it was pulled off, so that was cool. |
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Post subject: RE: Cool...
Posted: 12.11.2011 01:38
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Joined: 04.09.2008 Posts: 2859
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Yeah, Edgerton did a lot for high speed camera development. The rapatronics used a heavy-duty coil spring to pull 100 feet of film through the exposure plane into a shielded casing in less than one second. Because of the high-voltage electronics involved (which were nothing new to Edgerton who also developed the arc-flash), later designs, intended to be safer used a constantly-open shutter with a pair of rotating prisms sychronized with the film movement and form the basis of most high-speed cameras today.
/comments bashing the author of the article withheld |
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For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.
~Leonardo Da Vinci
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Post subject: RE: Cool...
Posted: 12.11.2011 13:36
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Joined: 10.09.2009 Posts: 904
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Sheesh... those clowns in the comments section make the FARK politics tab look like a Pulitzer laureate convention. Quite the collection of childish twits.
At times I wish we could detonate just one more nuke above ground, if only to train some state of the art cameras on it for the first 10ms or so. I look at that image and really want to see the whole development at microsecond intervals. Is there any way to see the magnetic field around that blast? I'll add that to the wishlist as well... |
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It's so flat here I can stand on a beer can and see Toronto.
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Post subject: Re: RE: Cool...
Posted: 12.11.2011 18:12
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Joined: 10.11.2010 Posts: 430
Location: Honolulu, HI
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chupathingie wrote: Is there any way to see the magnetic field around that blast? I'll add that to the wishlist as well...
Spectropolarimetry would work. You could get the B field vector, as well as Zeman splitting from line widths, so you could get both the orientation and the strength of the field. If you're using a multi-object spectrograph, you could get a whole map of the explosion in 4 dimensions: x,y, magnetic field, spectrum.
/Horray, for once astrophysics knowledge is useful for something! |
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My picasa account: https://picasaweb.google.com/Darth.Java
My flickr (older, not updated frequently): http://www.flickr.com/photos/23333818@N07/
My photography hero: http://www.mountainlight.com/
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Post subject: Re: RE: Cool...
Posted: 12.11.2011 21:04
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Moderator
Joined: 04.09.2008 Posts: 2859
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chupathingie wrote: Sheesh... those clowns in the comments section make the FARK politics tab look like a Pulitzer laureate convention. Quite the collection of childish twits.
I'm not saying it's justified, but every Gizmodo piece I've read by Jesus Diaz has been the same: under-researched, choppy, poorly written, and trying to make a point that has nothing to do with whatever inspired his piece. Frankly I'm surprised Gizmodo hasn't canned him yet. Half the vitriol in the comments is him bashing the people calling him out on being a horrible author. The people who actually bring up fact contradictory to his article get deleted. |
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For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.
~Leonardo Da Vinci
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Post subject: RE: Re: RE: Cool...
Posted: 12.12.2011 12:01
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Moderator
Joined: 10.09.2009 Posts: 1747
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| Yeah the article was mildly interesting based around an awesome picture with so much potential. When I read the comments I couldn't believe the rudeness in Jesus Diaz's replies to commenters. |
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flickr: http://www.flickr.com/photos/kestrana/
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Post subject: RE: Re: RE: Cool...
Posted: 12.13.2011 09:36
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Joined: 10.09.2009 Posts: 904
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| That's a great way to lose readers... reminds me of Antinous over at boingboing. |
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It's so flat here I can stand on a beer can and see Toronto.
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Post subject: RE: Re: RE: Cool...
Posted: 12.14.2011 16:26
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Joined: 14.02.2010 Posts: 2803
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Post subject: Re: RE: Re: RE: Cool...
Posted: 12.14.2011 18:24
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Joined: 27.02.2011 Posts: 671
Location: Manchester, UK
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ravnostic wrote: http://www.foxnews.com/scitech/2011/12/14/slow-mo-video-catches-light-at-1-trillion-frames-second/
Yeah, speeds this fast would catch just about everything...
...wow. |
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Post subject: RE: Re: RE: Re: RE: Cool...
Posted: 12.14.2011 20:51
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Moderator
Joined: 28.07.2006 Posts: 684
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1 trillion frames a second ... so if I took one seconds worth of images, it would take me 528 (and a bit) years to watch it all on a normal TV (assuming HD at 60 frames/s). That seems like a bit of overkill!  |
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Post subject: Re: RE: Re: RE: Cool...
Posted: 12.14.2011 21:31
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Moderator
Joined: 04.09.2008 Posts: 2859
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ravnostic wrote: http://www.foxnews.com/scitech/2011/12/14/slow-mo-video-catches-light-at-1-trillion-frames-second/
Yeah, speeds this fast would catch just about everything...
O.O
*blink*
O.O
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Holy Shit. |
_________________
For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.
~Leonardo Da Vinci
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Post subject: RE: Re: RE: Re: RE: Cool...
Posted: 12.14.2011 23:35
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Bibliostatus Rex
Joined: 13.07.2010 Posts: 1460
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| While it doesn't diminish it's coolness any, the thing to keep in mind about this camera is that it's not a trillion FPS in the traditional sense. The way I understand it, the shutter doesn't cycle at a trillion FPS but rather takes a shot with a trillionth-FPS exposure time and then varies the trigger point over each repetition of the event being photographed to build a contiguous-in-space-but-not-time set of images. So the camera only works on events that are exactly repeatable (which they're ensuring by using a high-precision laser pulse). |
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Post subject: RE: Re: RE: Re: RE: Cool...
Posted: 12.15.2011 10:46
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Joined: 10.09.2009 Posts: 904
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| Either way, what a demo! I always enjoyed super high framerate vids, but this is well up beyond the HFS class... that's some stunning trickery right there... |
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It's so flat here I can stand on a beer can and see Toronto.
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