http://www.sciencepunk.com/v5/2007/01/aura-goggles/ Kicking ass in the name of science! Tue, 06 Jan 2009 21:12:56 +0000 http://wordpress.org/?v=2.6.2 http://www.sciencepunk.com/v5/2007/01/aura-goggles/#comment-33637 Ray Girvan Tue, 25 Nov 2008 09:51:44 +0000 http://www.sciencepunk.com/v5/2007/01/aura-goggles/#comment-33637 Belay the previous guess. A few more sites are actually saying what's in Aura Googles: "pinacyanole bromide" filters. Pinacyanole is a blue dye used as a histological stain and (a.k.a. Sensitol Red) a moderately obsolete component in colour photography that increases the sensitivity of photographic emulsions to the red / infrared end of the spectrum. I can't find anything open-access that gives its transmission characteristics. Belay the previous guess. A few more sites are actually saying what’s in Aura Googles: “pinacyanole bromide” filters. Pinacyanole is a blue dye used as a histological stain and (a.k.a. Sensitol Red) a moderately obsolete component in colour photography that increases the sensitivity of photographic emulsions to the red / infrared end of the spectrum. I can’t find anything open-access that gives its transmission characteristics.

]]> http://www.sciencepunk.com/v5/2007/01/aura-goggles/#comment-2870 Matt Sat, 22 Sep 2007 08:02:04 +0000 http://www.sciencepunk.com/v5/2007/01/aura-goggles/#comment-2870 As far as book items go a best seller can be considered in the hundreds of thousands. Compared to population it can be a relatively small amount of sales. As far as book items go a best seller can be considered in the hundreds of thousands. Compared to population it can be a relatively small amount of sales.

]]> http://www.sciencepunk.com/v5/2007/01/aura-goggles/#comment-148 Frank the SciencePunk Thu, 11 Jan 2007 13:28:41 +0000 http://www.sciencepunk.com/v5/2007/01/aura-goggles/#comment-148 Thanks Ray! ^ ^ Thanks Ray! ^ ^

]]> http://www.sciencepunk.com/v5/2007/01/aura-goggles/#comment-147 Ray Girvan Thu, 11 Jan 2007 12:25:53 +0000 http://www.sciencepunk.com/v5/2007/01/aura-goggles/#comment-147 The description - an "indigo filter" - suggests strongly to me what they might be: Congo Blue theatrical gel. This is an indigo-blue lighting filter that has a strong dip in mid-range transmission; it lets through blue and red/infrared, but nothing much between. Since these frequencies have different focal lengths in the eye, you'll get freaky focus and depth effects - chromostereopsis - when you look at something white. The description - an “indigo filter” - suggests strongly to me what they might be: Congo Blue theatrical gel. This is an indigo-blue lighting filter that has a strong dip in mid-range transmission; it lets through blue and red/infrared, but nothing much between. Since these frequencies have different focal lengths in the eye, you’ll get freaky focus and depth effects - chromostereopsis - when you look at something white.

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