Learn some of the science behind optical illusions.

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raya wrote on Fri, 02/06/2015 - 13:14:

wow i did not now that

Patrick wrote on Thu, 01/30/2014 - 20:54:

Thank you. These videos teach so much about life and science, I'm glad I found you I must say.

Tom F wrote on Thu, 05/16/2013 - 12:18:

WOW!!!!!!!!!!!!!!!!!THAT IS SO COOL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Warrior1 wrote on Mon, 05/21/2012 - 13:40:

im confused

xktf wrote on Fri, 05/25/2012 - 15:06:


brevard wrote on Wed, 10/19/2011 - 19:39:

wow wow wow wow

brevard wrote on Fri, 09/30/2011 - 10:17:

im in school and my teacher made my username brevard so dont think
im an idiot kk?

hillsboroughmiddle wrote on Thu, 02/11/2010 - 15:47:

thank you for the data, it is very helpful for my understandings now

senoj wrote on Wed, 12/16/2009 - 12:02: