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<DIV><FONT face=Arial size=2>Thought the group might be interested to see this
little bit of history.</FONT></DIV>
<DIV><FONT face=Arial size=2>I found this Image Dissector at the Dayton Hamfest
last month. The seller had no idea what it was.</FONT></DIV>
<DIV><FONT face=Arial size=2>This pre-dates the Iconoscope quite a
bit.</FONT></DIV>
<DIV><FONT face=Arial size=2>The interesting thing (Philo Farnsworth, are you
still there?) about it is that all imaging tubes use some form of scan beam
to generate video from a fixed target. The Image Dissector is backward. The
electron image falls off the faceplate and is itself scanned past a small
aperture where an electron multiplier lives.</FONT></DIV>
<DIV><FONT face=Arial size=2>About the only thing these got used for was
monitoring the flame inside industrial boilers. The extremely low light
sensitivity wasn't an issue there, but lighting up an actor with enough
candlepower to get a good picture turned a man into a cinder!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Can't let TV development history be lost
forever.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>J. Mitch Hopper<BR>Custom Video Systems
Co.<BR>Rochester, IL<BR>217-498-8438<BR><A
href="mailto:id@brainmist.com">id@brainmist.com</A></FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>When I am reincarnated, I'm coming back with a
larger hard drive.</FONT></DIV></BODY></HTML>