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02-08-2013, 09:27 AM
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#1 |
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Techphile.
Join Date: Nov 2003
Location: San Francisco Bay
Posts: 6,296
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Femto-photography
Fast enough to see light in motion.
Ramesh Raskar: Imaging at a trillion frames per second - YouTube Force Flow and birddog_61 like this.
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02-09-2013, 08:52 AM
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#2 |
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The Gavel
Join Date: Dec 1999
Location: Upland, CA
Posts: 6,318
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Wow! Awesome post David, thanks for sharing.
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02-09-2013, 08:13 PM
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#3 |
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Mondsreitersmann
Join Date: Jul 1999
Location: Skingrad
Posts: 8,945
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Scary.
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Yesterday, 12:42 PM
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#4 |
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"Normal" again....??
Join Date: Dec 1999
Location: Regina, Saskatchewan, Canada
Posts: 17,600
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I'm somewhat baffled by how exactly this works. When you think about it, just guessing here, if the Coke bottle is approximately 9" in length, and the camera is 18" from the bottle, the light pulse has actually already reached the end of the bottle but still only half way to the camera itself. As such, the event has already happened before the camera has actually started to record it, even at a baffling trillion frames per second.
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Yesterday, 04:43 PM
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#5 |
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Techphile.
Join Date: Nov 2003
Location: San Francisco Bay
Posts: 6,296
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I think that you have to think about the different paths and time-distances that the photons from the same light source take in reaching the receptor in the camera. Light can and does slow through different mediums as well.
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Yesterday, 07:26 PM
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#6 |
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"Normal" again....??
Join Date: Dec 1999
Location: Regina, Saskatchewan, Canada
Posts: 17,600
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I understand that portion of it... I just find it baffling that the tech is there to actually record light in motion.
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Yesterday, 09:32 PM
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#7 |
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The Preacher Man
Premium Member
Join Date: Apr 2000
Location: Dallas
Posts: 4,977
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As a Texas boy who had difficulty with junior high and high school algebra, actually flunked both, but seeing how the football coach was the teacher and graded on the curve, you must understand I have no idea what you're discussing, although the pic/movie is awesome and have shared.
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