🚀 go-pugleaf

In article <1joi1jINNt5t@gap.caltech.edu> carl@SOL1.GPS.CALTECH.EDU writes:
>In article <1jkhpeINNi19@darkstar.UCSC.EDU>, haynes@cats.ucsc.edu (Jim Haynes) writes:
>=
>=    The screen is made of a long-persistance phosphor - but this just
>=    means that it's initially bright and decays for several seconds until
>=    it is too dim to see.  So targets the antenna has just passed are
>=    brightest, and those the antenna is about to come to have practically
>=    faded out, and those in between are of intermediate brightness.
>
>Sorry, but last time I looked, there's a second grid, right next to the
>screen, that controls whether or not the display is persistent.  At least,
>that's the way I remember a Textronix storage tube terminal working (the cursor
>didn't leave a persistent image, but any character or graphics you displayed
>would).
>-------------------------------------------------------------------------------
>Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL
>
Well (not to get in the middle of this), but last time I checked, you had to 
clear major sections (usually rectangular) of the storage tube at the same 
time. Can you clear a storage tube in a cyclically rotating sweep pattern?
If you were using a storage tube, you would have to have it cleared in the 
area just ahead of the rotating sweep.

While you could probably use a storage scopein some sort of RADAR display, I 
think the display the original poster refers to does indeed rely on a 
persistent phosphor.

Just an opinion,
george@alpha.ee.ufl.edu