Video questions about spatial-aliasing, Hz measurements, and analogvs. digital

Hi:

Some video websites say that spatial aliasing causes jaggies, other say
it causes the Moire effect, still others say it causes pixelation. Who
is right? What does spatial aliasing look like?

Also, which video specs are measured in "Hz" -- regardless of whether
the video is analog or digital? I believe "frame rate" is one of them.

In digital video, what specs are measured in Hz?

What specs are measured in Hz in analog video?


Thanks,

Radium

"Green Xenon [Radium]" <glucegen1@excite.com> wrote in message
news:4824d372$0$30183$4c368faf@roadrunner.com...
> Hi:
>
> Some video websites say that spatial aliasing causes jaggies, other say
> it causes the Moire effect, still others say it causes pixelation. Who
> is right? What does spatial aliasing look like?
>
> Also, which video specs are measured in "Hz" -- regardless of whether the
> video is analog or digital? I believe "frame rate" is one of them.
>
> In digital video, what specs are measured in Hz?
>
> What specs are measured in Hz in analog video?
>
>
> Thanks,
>
> Radium

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Ken