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How fast is light? Can you see light in slow motion?

light speed femto photography light in slow motion femto camera

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13 replies to this topic

#1 Larry

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Posted 28 July 2012 - 17:19

Question: How fast is light?

Answer: 299,792,458 metres per second or approximately 186,282 miles per second.


Question: If light is this fast, can you ever view light in slow motion?

Answer: With a femto camera that can shoot at a trillion frame a second, yes!


Edited by Larry, 28 July 2012 - 17:24 .

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#2 Tersn

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Posted 28 July 2012 - 18:15

A very interesting video and the results appear to have some far reaching consequences. Thanks for posting.

tersn
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#3 Ann

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Posted 28 July 2012 - 21:30

Fascinating and totally brilliant. Thank you so much for posting the link.

#4 Alan7140

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Posted 29 July 2012 - 01:39

Brilliant indeed. The thought of what is effectively a switch working continuously at the speed of light is just boggling.

Then I get hauled back into reality that other minds theoretically capable of producing this level of thought and accomplishment are presently just down the road from me cutting down and killing one of the oxygen supplies that are a basic necessity to simply staying alive, all so that people can have cheap floors to walk on, paper to feed into their photocopiers, and something convenient to wipe their butts with. Tell me things aren't screwed up.

Edited by Fred Nirque, 29 July 2012 - 01:50 .

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#5 Rags

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Posted 29 July 2012 - 03:12

Interesting. Thanks for the link... :good:

Rags

#6 Mark English

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Posted 29 July 2012 - 04:47

So I guess my Nikon is obsolete. Very cool science at work.

Thanks for posting.

P.S. I love TED talks
Best Regards,
Mark


"Look and think before opening the shutter. The heart and mind are the true lens of the camera."
Yousuf Karsh

#7 Chris101

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Posted 02 August 2012 - 06:27

I wonder how long it will be until this technology can be bought by hobbyists. It would take a developer with vision and drive, ... and a whole lot of funding, but wouldn't it be fun to take those kind of photos?

Thanks for posting this Larry! TED rocks.

#8 Akira

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Posted 02 August 2012 - 19:23

Very inspiring! Thanks for sharing, Larry!
"The eye is blind if the mind is absent." - Confucius

http://www.flickr.co...tos/akiraphoto/

#9 pluton

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Posted 03 August 2012 - 05:09

Brilliant indeed. The thought of what is effectively a switch working continuously at the speed of light is just boggling.

Then I get hauled back into reality that other minds theoretically capable of producing this level of thought and accomplishment are presently just down the road from me cutting down and killing one of the oxygen supplies that are a basic necessity to simply staying alive, all so that people can have cheap floors to walk on, paper to feed into their photocopiers, and something convenient to wipe their butts with. Tell me things aren't screwed up.


Isn't it amazing that with how intelligent the individual human is, as a species we're proving that we're just stupid genetic robots.
Keith B.

#10 averity

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Posted 03 August 2012 - 08:00

brilliant video, thank you so much for posting, will I live long enough to see the new F1? how many TPIX will it have? will I be able to photograph inside my eye to see what I’m really seeing? my grandchildren are going to have some fun all the time we have visionaries like Professor Ramesh Raskar pushing the boundaries.

#11 Elsa Hoffmann

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Posted 03 August 2012 - 08:53

thanks for posting - very interesting.
"I drifted into photography like one drifts into prostitution. First I did it to please myself, then I did it to please my friends, and eventually I did it for the money." Philippe Halsman

#12 jramskov

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Posted 17 August 2012 - 10:33

Thanks for posting - very fascinating!

I don't want to watch that bullit movie he was talking about though :D
Joergen Ramskov
I love deadlines. I like the whooshing sound they make as they fly by. [Douglas Adams]

#13 Dalek

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Posted 29 March 2013 - 21:22

Nice video. The speed of light is beyond me.

#14 PedroS

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Posted 30 March 2013 - 14:38

Again, you nail it, Larry.

One thing (only one? You're happy) puzzles me, if light is kept by itself, how can we see it before it reach it? So is something like Pete Seeger's celery consciousness where he sings in front of the song...

Many thanks for sharing.

Edited by PedroS, 30 March 2013 - 14:39 .

Thanks
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