In message , Cynic
writes
On Fri, 28 Aug 2009 16:24:55 +0100, bof
wrote:

At night I find the on/off flickering of LED brake lights particularly
annoying

I have never noticed such an effect.

At night move you sight from left to right and you should see the effect
quite clearly, same for the new(ish) flashing orange 'road works' lamps
on motorways, when they're on they are actually flashing.

I'll try it. It may well be an effect that only a low percentage of
people can see. A similar effect is known about DLP projectors.

Dunno if they're, DLP or not, but standing on the presenter side of some
projectors I definitely see a similar strobe effect (IIRC I see an R, a
G and a B image, BICBW)

--
bof at bof dot me dot uk