| The family crisis widely accepted on the Right as well as the Left is an optical illusion. |
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| Characters might think this is some sort of wizardry or witchcraft but it is actually an optical illusion. |
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| Some viewers may think the supermoon looks more dazzling, but it's actually an optical illusion. |
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| Another optical illusion that causes umpires to make mistakes is the parallax error. |
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| Their systematic use of axonometrics drains the subjectivity from the representation and sidesteps the optical illusion of perspective. |
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| It treats of a variety of topics from weather to chemistry, from animals to optical illusion in a question-answer form. |
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| Always try to create a hairstyle that gives an optical illusion of ovalness to the face. |
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| For others, it is only one optical illusion or an effect of our imagination. |
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| When flying facing the peak, the pilot might have suffered an optical illusion. |
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| Such veining creates an optical illusion of movement, which gives much character to this mantel. |
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| In effect, it is a simple executable for loading onto your Pocket PC that provides an optical illusion, impressive enough until you recognise it. |
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| The optical illusion will reverse itself when you look at your own actions. |
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| Drive back through Hawker and stop in Magnetic Hill, where an optical illusion appears to make your car roll uphill. |
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| The rough coat's head appears to be squarer, but this is an optical illusion. |
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| This is a fascinating optical illusion device and just the sort of scientific curiosity we love. |
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| Consider the famous optical illusion of two identical lines where one has concave triangles at its edges whilst the other has convex triangles at either end. |
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| This optical illusion is perfected in the upstairs powder room. |
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| Strauss-Kahn's sudden, astounding, and very definitive-seeming fall might make an optical illusion of his comeback rise. |
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| An optical illusion makes a downhill appear to be an uphill. |
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| She moves in and out of two dimensions and three dimensions, playing with optical illusion and atmospheric perspective. |
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| The swollen part of the shaft of a column situated approximately a third of the way up, used to counteract the optical illusion that the central part of a column is narrower than its top or bottom when seen from a distance. |
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| The surrounding terrain may create an optical illusion affecting the perception of the terrain being overflown, leading to underestimation of the slope. |
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| With his image and stereo experiments, Nänni, considered to be a master of optical illusion, guides the reader through the mysterious cosmos of visual perception. |
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| But first of all, we must bear in mind that the phenomenon is not an optical illusion, nor does it have anything to do with the perception of the brain that could play tricks on the observer. |
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| The principle of black-light theater is of an optical illusion of the so-called black cabinet, which plays upon the imperfections of the human eye: It's not possible for the eye to differentiate black on black. |
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| It has to conform to Natural Law, otherwise it's just an optical illusion. |
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| It represented an optical illusion of the leftovers from a feast on the floor of reach houses. |
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| Impossible objects and architecture, optical illusion and anamorphosis are the three key techniques on display. |
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| Agateware are simulations of natural agate stones and these coloured ceramics create an optical illusion. |
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| I respect and understand that the purpose of camouflage is to create an optical illusion that prevents hostile forces from making a full and proper visual identification of our troops. |
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| For some countries, whose average tariff has increased, this is an optical illusion due to the transformation of non-tariff barriers into tariffs. |
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