[amdx]

Hi all,
Here's a TED video of pulsed laser used in photography.
Watch it all, because at some point you might say, no that can't be
right, but then he explains it.

11 minutes.


http://www.youtube.com/watch?annota...&hd=1&src_vid=SoHeWgLvlXI&v=mfgsQX78hg8#t=12s

Mikek

 

[[email protected]]

Hi all,
Here's a TED video of pulsed laser used in photography.
Watch it all, because at some point you might say, no that can't be
right, but then he explains it.

11 minutes.


http://www.youtube.com/watch?annota...&hd=1&src_vid=SoHeWgLvlXI&v=mfgsQX78hg8#t=12s


Mikek

Lousy lip "sync".

 

[amdx]

Lousy lip "sync".

Gee, I was so into the subject that I didn't notice.
Why would you be interested in his lips?
Mikek

 

[[email protected]]

Gee, I was so into the subject that I didn't notice.
Why would you be interested in his lips?
Mikek

Do you not find it rather disconcerting when the sync is so bad?
Or does everybody's lips move before the corresponding sound?

 

[Sylvia Else]

Do you not find it rather disconcerting when the sync is so bad?
Or does everybody's lips move before the corresponding sound?

That effect is always present to some degree in real life. It depends
how far from the speaker you are.

Sylvia.

 

[Mr Stonebeach]

   Lousy lip "sync".

Why do you watch a youtube copy and not the original?

http://www.ted.com/talks/lang/en/ra...hat_takes_one_trillion_frames_per_second.html

Regards,
Mikko

 

[amdx]

I don't think it really takes a trillion frames per second. It's a
stroboscopic thing, like a sampling oscilloscope. I think they use a
streak tube and some sort of shutter to scan the other axis. I didn't
watch the entire video, but I didn't see an explanation of how it's
actually done. I suspect it takes a while to build up one of those
videos.

Exactly right John, That's why I said "watch it all" because it is
not as it seems. He does explain it.
Mikek

 

[Jamie M]

I did a quick pan and didn't see it. I'll look again when I have time.

I actually have a use for a streak camera. They are super-expensive,
so if this gets to production we may look to buy the tube somewhere
and make the rest ourselves. That would be fun.

Anybody here have experience with streak tubes?

I worked with the hamamatsu streak camera, C5680 series with these
modules:

blanking unit C5680

sweep unit M5675
(also M5676 sweep unit)

streak camera C5680

digital camera C4742-95


cheers,
Jamie