From: "M Graff" Sent: Thursday, March 02, 2006 9:32 AM > I already see artifacts of flickering break lights some cars have which > makes the break lights appear to be somewhere they are not (like in the > yard next to me, right in front of me when they are in the next lane > over) when I quickly move my eyes. And when I drive, I tend to quickly > move my eyes a lot. I see that too. It seems to be the same effect as the persistence of vision toy. For some reason they're strobing the LEDs. I bought some LED christmas lights a few months ago that do the same thing (though in that case I assume the reason is they don't rectify the AC and have half the LEDS pointing each way so it's a 60Hz strobe. Jason -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist