Re: High speed Tesla spark photographs

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Chris Rutherford" <chrismrutherford@xxxxxxxxxxxxxx>

 Hi Peter,

Slightly off the topic of using rotating mirrors, 
have you considered using a high frame rate 
camera i.e. 
<http://www.apollo-image.com/PDFs/AIT100HS128DEC05.pdf>http://www.apollo-image.com/PDFs/AIT100HS128DEC05.pdf 
?  Being able to remotely trigger capture or time 
stamp the recording to match the image with a 
digital sample of the current or voltage may be 
interesting.  A while ago I did some research on 
the way streamers discharging in to the air move 
around.  It was interesting as the streamers seem 
to form knots and bright spots as they move 
around.  I have summarised the interesting images in a short clip:-

<http://www.hackinghardware.com/tc/globedischarges.avi>http://www.hackinghardware.com/tc/globedischarges.avi

I think high speed photography and the 
formulation of knots and globes would be an 
interesting study.  Unfortunately at about 
£1500/$3000 for a high speed camera is a bit of a 
risk considering it could get fried by all sorts 
of fields and currents etc.   Maybe mirrors and 
lenses could be used to protect the camera.  Has 
anyone else observed knots etc?

Apparently there is phenomenon known as linked 
vortex ring.  It would be truly awesome if someone could photo some of these.

<http://www.hackinghardware.com/tc/knot.jpg>http://www.hackinghardware.com/tc/knot.jpg


Chris R