Super fast camera capuring light as it travel!

notbatman

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Quote from: BADecker on October 06, 2015, 01:03:51 PM

Quote from: notbatman on October 06, 2015, 09:10:02 AM

This technology was developed in India over a decade or so ago, why is MIT trying to take credit and claiming it's "new"?

EDIT:

oh, and Google has been cleansed of all the old links and only gives links to the new MIT articles. Nice...

EDIT 2:

ok, I found an old video from 2011, it still says it's from MIT but do recall this being even older than that and being developed in India with no mention of MIT.

https://www.youtube.com/watch?v=-fSqFWcb4rE

TED.

Ramesh Raskar presents femto-photography, a new type of imaging so fast it visualizes the world one trillion frames per second, so detailed it shows light itself in motion. This technology may someday be used to build cameras that can look “around” corners or see inside the body without X-rays.

https://www.ted.com/talks/ramesh_raskar_a_camera_that_takes_one_trillion_frames_per_second?language=en

I think I first saw this in 2009, I guess MIT bought this guy out. I wonder if he hangs out with Gavin now?

BADecker

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Quote from: notbatman on October 06, 2015, 09:10:02 AM

This technology was developed in India over a decade or so ago, why is MIT trying to take credit and claiming it's "new"?

EDIT:

oh, and Google has been cleansed of all the old links and only gives links to the new MIT articles. Nice...

EDIT 2:

ok, I found an old video from 2011, it still says it's from MIT but do recall this being even older than that and being developed in India with no mention of MIT.

https://www.youtube.com/watch?v=-fSqFWcb4rE

TED.

Ramesh Raskar presents femto-photography, a new type of imaging so fast it visualizes the world one trillion frames per second, so detailed it shows light itself in motion. This technology may someday be used to build cameras that can look “around” corners or see inside the body without X-rays.

https://www.ted.com/talks/ramesh_raskar_a_camera_that_takes_one_trillion_frames_per_second?language=en

notbatman

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Activity: 2212

Merit: 1038

This technology was developed in India over a decade or so ago, why is MIT trying to take credit and claiming it's "new"?

EDIT:

oh, and Google has been cleansed of all the old links and only gives links to the new MIT articles. Nice...

EDIT 2:

ok, I found an old video from 2011, it still says it's from MIT but do recall this being even older than that and being developed in India with no mention of MIT.

https://www.youtube.com/watch?v=-fSqFWcb4rE

BADecker

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Activity: 3990

Merit: 1385

I only watched the video once, but my understanding is that that they take advantage of the fact that lasers send out bursts of light. These bursts are super fast, but not as fast as the light travels itself. However, the bursts are similar enough to each other that they can track the first burst at one spot, and track a subsequent burst at a spot directly behind the first burst, and a third burst slightly behind the second, etc. The result is that there is an appearance of actually watching light travel.

The whole process is a bit of a trick. This trick expanded allows them to time laser bursts that are aimed in different directions to tell where objects are in a room, via the length of time it takes the light to reach a target object from certain angles. Bursts that are reflected off a wall around a corner can be tracked off their reflection in such a way to detect that there is a corner, and a wall that can't be see directly by the camera.

I could be wrong in my understanding. Watch the video.

https://www.youtube.com/watch?v=7Z8EtlBe8Ts

Preen

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I have a limited understanding of physics but from what I understand, its a paradoxical issue here.

Don't we use light itself as the reference point ?

acroman08

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Merit: 1115

A new camera developed at MIT can photograph a trillion frames per second. Compare that with a traditional movie camera which takes a mere 24. This new advancement in photographic technology has given scientists the ability to photograph the movement of the fastest thing in the Universe, light. In the video below, you’ll see experimental footage of light photons traveling 600-million-miles-per-hour through water. The actual event occurred in a nano second, but the camera has the ability to slow it down to twenty seconds. For some perspective, according to New York Times writer, John Markoff, “If a bullet were tracked in the same fashion moving through the same fluid, the resulting movie would last three years.”

It’s impossible to directly record light so the camera takes millions of scans to recreate each image. The process has been called femto-photography and according to Andrea Velten, a researcher involved with the project, “There's nothing in the universe that looks fast to this camera.”

here`s the link for the video: http://magazine.good.is/articles/super-fast-camera-works-at-light-speed?mbid=psocial_wired

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