The rotating disk is only there to replenish and renew the oil surface on which the electron beam is drawing the image. The speed of disk rotation has no effect on the latency.
It does have an effect on persistence of the image, but my understanding is that the disk was slow enough that movement was negligible compared to how fast the oil deformations faded.
Eidophor has practically zero latency, same as a CRT - whatever the electron beam draws is immediately visible.
It does have an effect on persistence of the image, but my understanding is that the disk was slow enough that movement was negligible compared to how fast the oil deformations faded.
Eidophor has practically zero latency, same as a CRT - whatever the electron beam draws is immediately visible.