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Uneori, perceperea unei imagini poate fi eronată, astfel că ceea ce vedem nu reflectă neapărat realitatea. Este vorba despre iluziile optice, care îi pot păcăli chiar şi pe cei mai vigilenţi dintre noi.
Una dintre cele mai cunoscute iluzii optice este însă cea a „şarpelui” care se învârte. Deşi acesta pare că se încolăceşte, în realitate, stă complet nemişcat.
Iluziile optice: cum este „păcălit” creierul să vadă altceva decât ceea ce este real
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