You may well have seen this before, but squares A and B are the same shade of grey. Go to Edward H Adelson's website for an explanation. Photo editing software is good for showing how it's done.
The Lilac Chaser is another popular optical illusion.
This less popular illusion is a tricky one. Apparently if you stare hard enough at the image you may catch sight of a Prime Minister. I can't see it myself - all I see is a PR hack for vested interests. Maybe rose-tinted specs would help.
That A and B one gets me every time, even though I know the answer. The lilac one is cool, I get the rotating green disc with a grey background after about five seconds.
ReplyDeleteIf May goes, can he last?
ReplyDeleteVery good. But not as tricky as Teresa.
ReplyDeleteMW - what gets me about the lilac chaser is that I can't stop it.
ReplyDeleteD - I hope not, but who might replace him?
rogerh - I had a wide choice though.
Blue-tinted specs might be even better to give you the illusion of Toryism.
ReplyDeleteDD - I think the voters of Witney bought up the whole stock.
ReplyDeleteI really think you should have put in the customary health warning before posting that third one. I mean, those of a nervous disposition could easily choke or something. Even I felt quite odd for a while.
ReplyDeleteac - I mistakenly assessed the health risk as negligible - mixing it up with the risk of him achieving anything worthwhile.
ReplyDeleteWhen I stare at the lower one, I just get Blair.
ReplyDeleteJH - I get bilious, but I know what you mean.
ReplyDelete