Optical Illusions & Visual Phenomena by Michael Bach

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	Optical Illusions & Visual Phenomena by Michael Bach
nycolas
12-9-2006 12:20 AM
2330 views
tags:
optical, illusions, visual, phenomena, motion, explanations
nycolas says:
This is a very intresting page that demonstrates several visual phenomena, explaining as well how these happen.
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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/91f1730b-479a-4537-ad1f-1b33d89b1771/B5DCE707-3A95-4060-ACBA-DE863F54D5C6/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.michaelbach.de/ot/index.html" href="http://www.michaelbach.de/ot/index.html" style="font-size: 11px;">www.michaelbach.de</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.michaelbach.de/ot/index.html"><table background="undefined" bgcolor=""><tr><TD><H1 align="center">  67 Optical Illusions & Visual Phenomena
<SPAN class="font_smaller">(Visual Illusion · Optische Täuschung)</SPAN></H1>
		<H2 align="center">by <A  href="http://www.michaelbach.de/ot/../index.html" set="yes">Michael Bach</A></H2>
		</TD></tr></table></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.michaelbach.de/ot/index.html"><DIV class="floatBarRight">
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<A  href="http://www.michaelbach.de/ot/mot_enigma/index.html"><IMG width="64" height="64" border="0" class="classOneIcon" alt="" src="http://www.michaelbach.de/ot/mot_enigma/icon.gif" /></A>
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<A  href="http://www.michaelbach.de/ot/mot_feet_rad/index.html"><IMG width="64" height="64" border="0" class="classOneIcon" alt="" src="http://www.michaelbach.de/ot/mot_feet_rad/icon.gif" /></A>
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<A  href="http://www.michaelbach.de/ot/cog_hiddenBird/index.html"><IMG width="64" height="64" border="0" alt="Hidden%20Bird" class="classOneIcon" src="http://www.michaelbach.de/ot/cog_hiddenBird/icon.gif" /></A>
<A  href="http://www.michaelbach.de/ot/cog_rotations/index.html"><IMG width="64" height="64" border="0" class="classOneIcon" alt="Rotation%20Illusions" src="http://www.michaelbach.de/ot/cog_rotations/icon.gif" /></A>
<A  href="http://www.michaelbach.de/ot/cog_imposs1/index.html"><IMG width="64" height="64" border="0" class="classOneIcon" alt="" src="http://www.michaelbach.de/ot/cog_imposs1/icon.gif" /></A>
<A  href="http://www.michaelbach.de/ot/fcs_hollow-face/index.html"><IMG width="64" height="64" border="0" class="classOneIcon" alt="Hollow%20Face%20Illusion" src="http://www.michaelbach.de/ot/fcs_hollow-face/icon.gif" /></A>
<A  href="http://www.michaelbach.de/ot/fcs_face_in_beans/index.html"><IMG width="64" height="64" border="0" class="classOneIcon" alt="" src="http://www.michaelbach.de/ot/fcs_face_in_beans/icon.gif" /></A>
<A  href="http://www.michaelbach.de/ot/fcs_face_on_mars/index.html"><IMG width="64" height="64" border="0" class="classOneIcon" alt="Face%20on%20Mars" src="http://www.michaelbach.de/ot/fcs_face_on_mars/icon.gif" /></A>
<A  href="http://www.michaelbach.de/ot/fcs_thompson-thatcher/index.html"><IMG width="64" height="64" border="0" class="classOneIcon" alt="Thatcher%20Illusion" src="http://www.michaelbach.de/ot/fcs_thompson-thatcher/icon.gif" /></A>
<A  href="http://www.michaelbach.de/ot/fcs_SpatFreqComposites/index.html"><IMG width="64" height="66" border="0" class="classOneIcon" alt="blurred%20faces" src="http://www.michaelbach.de/ot/fcs_SpatFreqComposites/icon.gif" /></A>
<A  href="http://www.michaelbach.de/ot/fcs_mosaic/index.html"><IMG width="64" height="64" border="0" alt="face%20mosaic" class="classOneIcon" src="http://www.michaelbach.de/ot/fcs_mosaic/icon.gif" /></A>
</DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.michaelbach.de/ot/index.html"><P align="left">These pages demonstrate visual phenomena, and »optical illusions« or »visual illusions«. The latter is more appropriate, because most effects have their basis in the visual pathway, not in the optics of the eye. When I find the time I will expand the explanations, to the degree that these phenomena are really understood; any nice and thoughtful comment welcome.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.michaelbach.de/ot/index.html"><P align="left"> »Optical illusion« sounds pejorative, as if exposing a malfunction of the visual system. Rather, I view these phenomena as bringing out particular good adaptations of our visual system to <I>standard</I> viewing situations. These adaptations are »hard-wired« into our brains, and thus under some artificial manipulations can cause inappropriate interpretations of the visual scene. As Purkinje put it: <I>»Illusions of the senses tell us the truth about perception« (cited by Teuber, 1960)</I>.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/B5DCE707-3A95-4060-ACBA-DE863F54D5C6/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>
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