Totuşi, există şansa nefericită de a-ţi pierde ori ochelarii, ori lentilele, aşa că e posibil să ai nevoie de o soluţie de moment. Henry Reich de la Minute Physics a găsit un mic truc pentru a-şi corecta viziunea.
Pentru a înţelege motivul funcţionării a ceva atât de simplu, nu trebuie decât să gândim procesul. Pentru a percepe ceva, lumina trebuie să „călătorească” de la o sursă, să lovească un obiect, apoi să ajungă la ochiul tău pentru a fi proiectat pe retină, unde se va forma imaginea. Dacă nu am avea lentilele din globul ocular, lumina s-ar împrăştia pe retină, astfel încât nu am vedea nimic clar, scriu cei de la Science Alert.
Din acest motiv, atunci când vezi ceva chiar în faţa ochilor, totul în fundal devine uşor blurat. Lentilele din ochiul uman pot concentra doar lumina care vine de la o anumită distanţă. Dacă un obiect este prea aproape sau prea departe, lumina va fi proiectată haotic. Aici intervin muşchii globului ocular, care le pot contracta, iar atunci când nu funcţionează cum trebuie, ochelarii, lentilele sau operaţiile ne pot ajuta să reparăm problema.
Vezi despre ce e vorba, pe playtech.ro
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