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+--- Thread: 1,000,000,000,000 FPS (/showthread.php?tid=6374)
1,000,000,000,000 FPS - Dark Jaguar - 17th December 2011
<iframe width="640" height="360" src="http://www.youtube.com/embed/9RbLLYCiyGE?feature=player_embedded" frameborder="0" allowfullscreen></iframe>
Slowed down to 30.
What you're seeing there is the light bouncing off the closest things to the lense and reaching it followed by farther and farther objects from the lense as the light reaches them in time, creating that bizarre wave effect. Actually, more accurately, the wave is a recording of the light from the shortest path between light source, reflecting object, and camera to longest path. In any case, this camera is so fast it can actually see the light slowly fill a scene instead of how we and every other camera sees it (including every other high speed camera) as simply instantly lighting the room.
I'm pretty sure Sonic, Captain Falcon, and The Flash all just retired.
1,000,000,000,000 FPS - etoven - 18th December 2011
WOW, I wonder how big that movie file was! Was it some special format or MPG, MPG2/4? Does the MPG format even support a frame rate that high? That's insane..
1,000,000,000,000 FPS - Weltall - 18th December 2011
It isn't actually shooting video at a trillion frames per second, in that it is not shooting one trillion frames. It's a camera with a shutter speed of 1/1,000,000,000,000th of a second capturing images rapidly which were collated into a video shown at a framerate a little more conducive to human eyes.
A second of video shot at a trillion frames per second would take centuries to view if slowed down to 30.
1,000,000,000,000 FPS - etoven - 18th December 2011
Weltall Wrote:It isn't actually shooting video at a trillion frames per second, in that it is not shooting one trillion frames. It's a camera with a shutter speed of 1/1,000,000,000,000th of a second capturing images rapidly which were collated into a video shown at a framerate a little more conducive to human eyes.I know the video is only running at 30FPS, but the method you describe just wouldn't work, the video shown here is smooth and fluid, the method you describe would result in horrible quality video that would be slow and jerky, also a single camera couldn't possibly process a frame fast enough at that shutter speed. It's much more likely they had multiple camera's (probably hundreds) shooting video at a 1/1,000,000,000,000th delay between each other and that they resembled the frames afterwords.
A second of video shot at a trillion frames per second would take centuries to view if slowed down to 30.
1,000,000,000,000 FPS - Dark Jaguar - 18th December 2011
It didn't actually record an entire second of video. The recording only lasted the time of a single laser pulse (the light source). While it is "a trillion FPS" it wasn't on long enough to record a trillion frames. That's just the ratio.
As for how it worked, yes, there is no shutter, film reel, or electronic sensor nearly quick enough to capture those speeds. The "hundreds of cameras collated together" is close, but here's the trick.
Essentially, the camera they used recorded one LINE of pixels, using a special "reverse CRT" to move through from the left to the right side of the image in that sort of insane time. There was a whole row of image recorders that the "reverse CRT" was hitting in the camera, and even then it was so packed it could only get a single row of pixels. So, because they knew the exact timing of the laser pulse and the camera array, they could reproduce identical conditions repeatedly. There was a moving mirror that could adjust the "height" of the recording. So, this mirror was moved slightly, the laser was fired and several shots were taken over and over again for each row in height. These were all combined into a single video in the end, and there you have it. It's entirely real, but collated from repeated shots with identical lighting conditions. In that way, it could be seen as a cheat.
The speeds are still crazy though. At that speed a bullet would stand still.