Re: [TCML] Life Magazine historic photo archive

[Ed Phillips <evp@xxxxxxxxxxx>]

	Obvious once you point it out - one other detail.  The things that appear to be a secondary winding are actually voltage gradient control rings used to equalize the voltage across different segments of the column.  Probably have some highly resistive material between each one.  This must be a device designed to power some sort of accelerator - wonder what type?

Ed


"You can see what appears to be a wide belt (perhaps 10" wide?) on a pulley
on the end of the large motor at the base of this device.


-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Ed Phillips
Sent: Thursday, November 27, 2008 12:38 PM
To: Tesla Coil Mailing List
Subject: Re: [TCML] Life Magazine historic photo archive

Hi Dave,


I believe that is actually an inclosed Van de Graf
generator. That does look like a primary coil that
the technician is standing on, though doesn't it?
I have seen other images of this same piece and
I believe it was identified as a VDG.
BTW, did anyone notice the "ghost" painter
piering down at the technician in this photo?
http://images.google.com/hosted/life/f?q=high+voltage+source:life&imgurl=bda
8429bbe7891df 


David Rieben"

   I think it has to be a VDG because a TC would never work inside a 
close-fitting metal vacuum tank such as the one shown.  Sure looks like 
a primary in the base but too big and close to the metal surroundings.

Ed


_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla