Friday April 25 2014
Learn some of the science behind optical illusions.

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


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


im confused




wow wow wow wow


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


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



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