2009
finalist

Tube illusion

Lothar Spillmann, Joe Hardy, Peter Delahunt, Baingio Pinna, and John S. Werner

UCD Medical Center, USA;University of Freiburg, Germany;PositScience, USA;University of Sassari, Italy
Tube illusion

© 2009 Lothar Spillmann

Take a cardboard tube, such as from a kitchen paper role, and hold it close to your eye, while keeping the other eye open. Look at a bright wall. The disk-shaped area seen through the tube will appear strikingly brighter than the same surface area viewed by the other eye. The effect is reminiscent of a flashlight illuminating the area under consideration. The effect takes a few seconds to fully develop. It also works with a textured surface where it enhances not only the brightness and color, but also the detail.

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Rating: 6.3/10 (152 votes cast)
Tube illusion, 6.3 out of 10 based on 152 ratings

| Presented Sunday, May 10th, 2009 |


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3 Responses to “Tube illusion”

  1. Kylie Batt says:
    April 11, 2010 at 9:49 am

    Так не пойдет….

    менеджер/ администратор The disk-shaped […….

  2. Гай Петроний Арбитр says:
    April 20, 2010 at 11:24 am

    …

    Минуя нас, судьба вершит дела. …

  3. Александр Поп says:
    April 21, 2010 at 4:31 am

    …

    Ошибаться — свойство человека, прощать — свойство богов. …