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ความคิดเห็นที่ 21 |
modern classic case
The image shows what appears to be a black and white checker-board with a green cylinder resting on it that casts a shadow diagonally across the middle of the board.
The black and white squares are actually different shades of gray. The image has been constructed so that white squares in the shadow, one of which is labeled B, are actually the exact same gray value as black squares outside the shadow, one of which is labeled A.
The two squares A and B appear very different as a result of the illusion
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แสงเรืองรองของฟ้าหลังฝน 
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21 ส.ค. 52 08:09:29
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... เข้ามาดู
