Magenta Ain't A Colour


	Magenta Ain't A Colour

wildcat

3-2-2007 6:59 AM

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tags:

science, brain, neurology, light, color, magenta

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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/6b7abbe4-6f19-4f2c-9b47-4d6751fc9c2e/47AF87A0-D409-4D72-A87D-79DBB7F92DAA/" 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.null-hypothesis.co.uk/science/strange-but-true/profs-probings/colour_spectrum_magenta_complimentary_bizarre" href="http://www.null-hypothesis.co.uk/science/strange-but-true/profs-probings/colour_spectrum_magenta_complimentary_bizarre" style="font-size: 11px;">www.null-hypothesis.co.uk</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.null-hypothesis.co.uk/science/strange-but-true/profs-probings/colour_spectrum_magenta_complimentary_bizarre"><H1><IMG alt="Magenta Ain't A Colour" class="article_img" src="http://www.null-hypothesis.co.uk/t.php?p=2007_02_09_profprobing_magentatitle.jpg&s=150" />
Magenta Ain't A Colour</H1></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.null-hypothesis.co.uk/science/strange-but-true/profs-probings/colour_spectrum_magenta_complimentary_bizarre"><FONT size="2" face="Arial">A beam of white light is made up of all the colours in the spectrum. The range extends from red through to violet, with orange, yellow, green and blue in between. But there is one colour that is notable by its absence (<A href="javascript:void(window.open('/photos/2007_02_09_ProfProbing_MagentaSpectrum.jpg','','resizable=no,location=no,menubar=no,scrollbars=no,status=no,toolbar=no,fullscreen=no,dependent=no,height=200'))">click here to check</A>). Pink (or magenta, to use its official name) simply isn’t there. But if pink isn’t in the light spectrum, how come we can see it?</FONT></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.null-hypothesis.co.uk/science/strange-but-true/profs-probings/colour_spectrum_magenta_complimentary_bizarre"><FONT size="2" face="Arial">Here’s an experiment you can try: stare at the pink circle below for about one minute, then look over at the blank white space next to the image. What do you see? You should see an afterimage. What colour is it?</FONT></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.null-hypothesis.co.uk/science/strange-but-true/profs-probings/colour_spectrum_magenta_complimentary_bizarre"><div align="center"><img src="http://content8.clipmarks.com/blog_cache/www.null-hypothesis.co.uk/img/0EF48875-0940-4F9D-8806-C32232F85D88" alt="" /></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.null-hypothesis.co.uk/science/strange-but-true/profs-probings/colour_spectrum_magenta_complimentary_bizarre"><FONT size="2" face="Arial">You should have seen a green afterimage, but why is this significant?  </FONT></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.null-hypothesis.co.uk/science/strange-but-true/profs-probings/colour_spectrum_magenta_complimentary_bizarre"><FONT size="2" face="Arial">
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This means that colours only really exist within the brain – light is indeed travelling from objects to our eyes, and each object may well be transmitting/reflecting a different set of wavelengths of light; but what essentially defines a ‘colour’ as opposed to a ‘wavelength’ is created within the brain. </FONT></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/47AF87A0-D409-4D72-A87D-79DBB7F92DAA/blog/" title="blog or email this clip"><img src="http://content9.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>