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อ้ายโบ้

เทคนิคถ่ายหยดน้ำ Angel's TearDrops

http://jackiejan.multiply.com/photos/album/319/Angels_TearDrops#

Brain negative processed

จ้องจุดบนจมูกสาวคนนี้ 30 วิ แล้วรีบมองพื้นขาวข้างๆ แล้วกระพริบตาถี่ๆ

Google Science Fair  

Stare at the colored dots on this girl’s nose for 30 seconds, then quickly look at a white wall or ceiling (or anything pure white) and start blinking rapidly. Congratulations, you just processed a negative with your brain! A question for you GSF, how is this possible?

(This is a brilliant ad, but we are not endorsing it by any means, we are interested in the science of the brain)