On 06/12/2020 12:04, williamwright wrote:
On 06/12/2020 00:40, Dave Plowman (News) wrote:

Correct. The resolution of a CRT depends on the number of 'pixels' per
square unit. Very small tubes generally have about the same as larger
ones
- so actually poorer resolution.


But what about monochrome tubes? My old Sony 9-9OUB and various Rigondas
and Vegas, and little CCTV monitors, seemed sharp enough back in the day.

No shadow mask, so the horizontal limit is just down to the available
video bandwidth, and how cleanly it is processed. Normally suggested to
be something akin to 720 "pixels". Vertical is down to the number of
visible scan lines (c. 575 lines)


--
Cheers,

John.

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