Fooling the brain (Introduction)
by David Turell 
, Saturday, October 13, 2012, 02:26 (4426 days ago)
The Ames illusion:-http://www.scientificamerican.com/video.cfm?id=instant-egghead-what-is-2012-10-09&WT.mc_id=SA_DD_20121011
by David Turell , Saturday, October 13, 2012, 02:26 (4426 days ago)
The Ames illusion:-http://www.scientificamerican.com/video.cfm?id=instant-egghead-what-is-2012-10-09&WT.mc_id=SA_DD_20121011