Comments on: Polarised plastic http://dansdata.blogsome.com/2007/06/24/polarised-plastic/ the blog that is not dansdata.com Sun, 12 Feb 2012 06:01:44 +0000 http://wordpress.org/?v=1.5.1-alpha by: Phage http://dansdata.blogsome.com/2007/06/24/polarised-plastic/#comment-1094 Mon, 25 Jun 2007 20:59:32 +0100 http://dansdata.blogsome.com/2007/06/24/polarised-plastic/#comment-1094 I remember seeing some very interesting articles on stress analysis using polarised light and hard plastic copies of mag wheels I think. But a quick Google throws up some interesting <a href="http://www.google.co.uk/search?hl=en&amp;sa=X&amp;oi=spell&amp;resnum=0&amp;ct=result&amp;cd=1&amp;q=polarized+light+stress+analysis&amp;spell=1" rel="nofollow">links</a> I remember seeing some very interesting articles on stress analysis using polarised light and hard plastic copies of mag wheels I think. But a quick Google throws up some interesting links

]]> by: The Axeman http://dansdata.blogsome.com/2007/06/24/polarised-plastic/#comment-1093 Mon, 25 Jun 2007 08:45:16 +0100 http://dansdata.blogsome.com/2007/06/24/polarised-plastic/#comment-1093 Like the photos. Just need to remove the supporting structure. Like the photos. Just need to remove the supporting structure.

]]> by: Noodles http://dansdata.blogsome.com/2007/06/24/polarised-plastic/#comment-1092 Mon, 25 Jun 2007 00:09:39 +0100 http://dansdata.blogsome.com/2007/06/24/polarised-plastic/#comment-1092 Since you mentioned the head wiggle of those wearing sunglasses and looking at LCDs, I thought you might be interested to know (although maybe you already do) that it's possible to see the polarisation light with the naked eye. Looking at my LCD right now I can clearly see the direction of polarisation without the aid of sunglasses or other polarised film. The effect, which is a result of dichroism in the eye, is often referred to as "Haidinger's Brush". Do a Google and you'll find all the info you need to learn how to recognise it. Once you get used to it you'll then be able to easily see the polarisation in all kinds of things, like the sky. The downside (at least for me) is that once you know how to recognise it you'll start to see it everywhere, and it might become difficult <i>not</i> to see it. Great photos by the way :) Since you mentioned the head wiggle of those wearing sunglasses and looking at LCDs, I thought you might be interested to know (although maybe you already do) that it's possible to see the polarisation light with the naked eye.

Looking at my LCD right now I can clearly see the direction of polarisation without the aid of sunglasses or other polarised film.

The effect, which is a result of dichroism in the eye, is often referred to as "Haidinger's Brush". Do a Google and you'll find all the info you need to learn how to recognise it. Once you get used to it you'll then be able to easily see the polarisation in all kinds of things, like the sky.

The downside (at least for me) is that once you know how to recognise it you'll start to see it everywhere, and it might become difficult not to see it.

Great photos by the way :)

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