[time-nuts] GPS for Nixie Clock

Bob Camp kb8tq at n1k.org
Fri Jul 15 16:15:56 EDT 2016


As a single pulse flash of light you can “detect” very narrow pulses. When you start trying to 
decide “which one came first?” and *resolve* visual information, things slow down quite a
bit. You can play a game to see how well people do. With most groups and most 
“targets”, anything under about 100 ms starts to get pretty random. 

If you “chop” a video signal, people can detect jitter out to 50 ms or so with normal scenes. With something 
that is moving very fast, most people can tell the difference between 20 sps and something 
faster based on “blur”.

So, different answers depending on just what the question really was. 


> On Jul 15, 2016, at 2:47 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
> kb8tq at n1k.org said:
>>   If the objective is a time *display* that is read with a human eye,
>> anything  under 1 ms is not of much use. Your eye can’t detect it.
> What can your eye detect?
> Is there good data?  Does it vary with age or things like that?
> -- 
> These are my opinions.  I hate spam.
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