[Prev][Next][Index][Thread]

Re: very long sparks



At 08:40  06/01/2000 -0700, Bert Hickman wrote:

>Certainly! I've scanned in a jpeg of the picture and you can see it at
>http://people.ce.mediaone-dot-net/bert-hickman/frames/longarc.htm

Couple of comments:

1.  Having taken a look at the discharge, what amazes me is the path taken.

The discharge terminal at top of the building (you couldn't refer to 
something this size as a "coil") is of comparatively small dimension and 
the e-field should be such that the ground would have been a "better" 
target long before the transmission tower ? 100m away.

Seems odd.  I bet if we built a coil to a scale of this and placed a 
grounded tower equidistant as per the photo we would be waiting 'till hell 
freezes over before the tower was hit.

2.  I think it is hard to ascertain the true distance of this 
discharge.  Granted it is large (and I'd be bloody pleased if it were my 
coil !) but the perspective of the photo is "optimized" to make it look 
larger.  Look at the fence leading to the towers, they are in fact well in 
the distance and we don't see the actual tower hit (which appears to be 
back towards the viewer).

3.  The other thing which is strange is some of the shadowing in the 
photo.  Seems to be lit from above ???   I would be interested to get an 
expert photographic opinion !

Bert ...... I am just a little skeptical of this shot :-(

I think this comes from my training as an "Intensivist", our 3 rules:

1.  Believe nothing
2.  Trust no-one
3.  Give oxygen !

What do you & others think ??

Cheers

Mark


___________________________________________________________

Mark Finnis				Hm:  61  8  8431 2889
Staff Specialist				Wk:  61  8  8222 4000
Intensive Care Unit			Fax:  61  8  8223 6340
Royal Adelaide Hospital			Mbl:  041 2324268
www.health.adelaide.edu.au/icu
___________________________________________________________