What significant limitation did the physical nature of the Nipkow disk impose on image quality improvement?

Answer

Motion was constrained by mass and inertia

The mechanical nature of the disk meant that increasing picture detail required higher rotational speeds, which became constrained by the mass of the spinning metal and the resulting inertia, creating a hard ceiling on picture fidelity.

What significant limitation did the physical nature of the Nipkow disk impose on image quality improvement?
Televisioninventordevicefirst