Re: High speed Tesla spark photographs

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>

At 07:35 PM 9/16/2006, Tesla list wrote:
> Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
>
> Hi Peter,
>
> This is probably the most impressive Tesla coil spark photo I have ever seen!!
>
> I enhanced and commented it here:
>
> http://drsstc.com/~piranha/PIRANHA/STREAMER.jpg
>
> You can see every known leader phenomena in it!!!!
>
> Here is a reference from Bazelyan/Raizer.
>
> http://drsstc.com/~piranha/PIRANHA/STREAMER-ref.jpg
>
> It looks like the leader tip stalls a bit probably as that cycle 
> reverses and cuts off the power. The next cycle reheats it and 
> eventually it goes onward and briefly stalls again.
>
> Amazingly, you can see the streamer branches(!!!) at the very tip on 
> the right where it is darker.
>
> Looking forward to more!!!
>
> This is fantastic stuff!!! Your pictures are some of the best 
> available of any leader arc and probably far better!!!
>
> Happily, I just got my mirrors in ;-)))  A lot is going on the next 
> few days, but I will see what I can get going!!

You might want to check out Andrew Davidhazy's pages at RIT.  He's a 
professor who teaches a class in high speed photography, and if the 
pages don't answer a question, an email to him might be 
productive.  The images you're getting are wonderful, and I think 
he'd be intrigued.
http://www.rit.edu/~andpph/

There's also a book published by SPIE on rotating mirror streak and 
framing cameras that you might find interesting.  Some years ago, I 
was contemplating trying to take high speed motion pictures of two 
colliding bullets at around 1 Megaframe/sec, and did a fair amount of 
research on how to go about doing it.


> Cheers,
>
>         Terry