Re: [Phys-l] 240 and 600 Hz

[ludwik kowalski <kowalskil@mail.montclair.edu>]

Thank you Rick. Someone also told me that


Another thing I learned several days ago was that the signal delivered  
by the cable company has the refreshment rate of 60Hz. Higher  
frequencies are created in TV sets, according to chosen setting.

Ludwik
==============


On Apr 18, 2011, at 10:34 AM, Dr. Richard Tarara wrote:

> There is signicant blurring of fast motion scenes at the lower refresh
> rates.  Exactly why we 'see' this on uniquely pixelated screens and  
> not on
> the older CRT scanned screens, I don't know, but it might be partly  
> due to
> the fact that most digital TVs now do progressive rather than  
> interlaced
> scans and just the fact that all the images are sharper to begin with.
> Blurring of an already blurred image might not be so noticeable.
>
> Rick
>
> Richard W. Tarara
> Professor of Physics
> Saint Mary's College
> Notre Dame, Indiana
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> ----- Original Message -----
> From: "ludwik kowalski" <kowalskil@mail.montclair.edu>
> To: "Forum for Physics Educators" <phys-l@carnot.physics.buffalo.edu>
> Sent: Thursday, April 14, 2011 4:55 PM
> Subject: [Phys-l] 240 and 600 Hz
>
>
> > Some new High Definition TV sets  are designed for very high image
> > refreshment rates, such as 240 Hz and even 600 Hz. This seems to be
> > unnecessary; the refreshment rate for traditional movies has been 30
> > Hz. Because of this I think that anything above 60 Hz is just waste  
> > of
> > money. Do you agree?
> >
> > Ludwik
> >
> > http://csam.montclair.edu/~kowalski/life/intro.html
>
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Ludwik

http://csam.montclair.edu/~kowalski/life/intro.html