"Phil Cook" <phi### [at] nospamrocainfreeservecouk> wrote:
>
> Not bulbs, but I know the tubes hum seem to increase in pitch and they
> start flickering before they go. I spot it more often in shops (prevalence
> of such lights), but the wierd thing if I point it out to someone or a
> sales guy they just get a blank look. If it was all of the lights doing it
> I'd say it was me, but it's just some. Oh and for some reason the flicker
> shows up more in reflecting light, browsing one section of DVDs I had to
> stop as it was like a strobe effect.
>
> Anyone else with the same thing or should I just submit myself to the
> nearest lab for scientific study and dissection :-)
>
> --
> Phil Cook


You probably see it using your peripheral vision as we have groups of cells
in that area, which act as motion detectors. The flickering excites them
and draws your attention to them. Then you can see nothing amiss.

Stephen

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