>However, the problem WRT accuracy is the "afterglow time" (or whatever
>the correct term is) of the CRT. In order to minimize flickering, all
>CRTs have a certain time constant on the light emitting phosphorus
>layer, and although this is a very short time compared to that of an
>LCD, or even a PAL/NTSC TV set CRT, I'm afraid it might stretch those 40
>ms a few percent.
This "afterglow time" is more affectionately known as the "persistence of the
phosphor".
Warmest and humblest regards,
Ray Minich
Dresser Equipment Group
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