Cover With This Card A Black Part Of

Cover with this card a black part of the letter "About" also pay attention to the white center of the letter which has remained Visible owing to an aperture in a card. Clean(remove) a screen and - Mark(Aim), that the white center of the letter seems is more white, than fields - tables when the black part of the letter is naked(exposed). When It(She) is covered with a screen, the center of the letter "About" seems having Same , as well as other part of the verifying table. Hence, it is possible to show, that the white center of the letter "About" - is more white, than it(he) is actually. It also is that, That named visualization (imagination). When we see what is not present in a reality, we actually not We see, and only we imagine it. Meaningly representing the center of the letter "About" is more white, than it(he) Is actually, we promote increase in contrast Between black and white and, thus, we improve vision of the letter. Than you center of the letter is more white can to imagine "About", That it becomes better your sight for it(her) and when improves - letters "About", vision and all other letters improves on To the verifying table.