A 63 second exposure shows a Tesla tree of sparks for Christmas . These come from a 8 foot metal rod which acts as a rotating breakout point that is progressively raised in a spiral so sparks extend from ground level up to a high of about 18 feet.  Hoping my umbrella will protect me here.
For more details and photos:

This was done during development of the Tesla Xmas tree 2009.

Note that this is a long exposure with me next to the coil with it turned off  for the first exposure with a flash.  After I have left the picture in darkness, the coil is than turned on and the exposure eventually stops at 63 seconds after the rotating arm has completed it’s vertical travel.

Related pages
Tesla Xmas tree 2009

External links
Facebook 2012:
Discovery Channel 1.7k likes
I feaking love science 28k likes
Science Channel
9GAG
Google+ 1.9k +1’s

Try something else
Zinc negative resistance oscillator

Photo Date:  June 21, 2009