So much for Phase 1 Suggestion box?
> To: <[EMAIL PROTECTED]> > Date: 3/7/2006 6:33:48 PM > Subject: Re: A little more progress > > Well, if the ~ 3-electron-mass particles exist, Fred, I'm seeing > no sign of them in our experiment. > The experimental rig we designed is working just according to > plan. The modified vertical deflection gives a neat horizontal line > which can be deflected near the upper edge of the screen by > driving it with about 1.35 to 1.4+ VDC. With the brightness > turned all the way down, the trace is just about right. > I was working with the trace about 3/8 inch from the top > of the screen - I had covered it (as you suggested) with a strip > of electrician's tape. This masked the electron trace very > well, but - as I feared - the backlight from the trace lighting > the rear sides of the tube gave a very faint background glow > to the screen. You need not "dark adapt" your eyes for long > before you realize that this unwanted glow will tend to limit > the sensitivity. > Still, I'll guess that I could have picked up a "rogue" trace even > one thousandth the brightness of the main electron trace. > No such trace could be detected (by me) after several minutes > of screen watching. > If I tried to boost the trace brightness, the result was just to > increase the background light and it seems that this is a losing > variation. > As I mentioned earlier, You could probably duplicate this > setup by doing no more than snipping the vertical leads and > substituting a single 1.5 volt battery for the vertical drive. > Come to think about it - a lower voltage nicad cell might be > even better and would require no additional series resistance. > >
