Re: [Phys-l] 240 and 600 Hz

["Dr. Richard Tarara" <rtarara@saintmarys.edu>]

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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