Comments on: Cheap “Liquid Glasses” Bring Clear Vision to the Poor http://blogs.discovermagazine.com/discoblog/2009/01/05/cheap-liquid-glasses-bring-clear-vision-to-the-poor/ Quirky, funny, and surprising science news from the edge of the known universe. Mon, 09 Nov 2009 04:42:05 -0600 http://wordpress.org/?v=2.8.4 hourly 1 By: bn http://blogs.discovermagazine.com/discoblog/2009/01/05/cheap-liquid-glasses-bring-clear-vision-to-the-poor/comment-page-1/#comment-24265 bn Tue, 30 Jun 2009 23:53:36 +0000 http://blogs.discovermagazine.com/discoblog/2009/01/05/cheap-liquid-glasses-bring-clear-vision-to-the-poor/#comment-24265 These glasses would also be beneficial to poor people in our country as well. These glasses would also be beneficial to poor people in our country as well.

]]> By: cheap glasses http://blogs.discovermagazine.com/discoblog/2009/01/05/cheap-liquid-glasses-bring-clear-vision-to-the-poor/comment-page-1/#comment-21519 cheap glasses Thu, 12 Mar 2009 02:31:40 +0000 http://blogs.discovermagazine.com/discoblog/2009/01/05/cheap-liquid-glasses-bring-clear-vision-to-the-poor/#comment-21519 I think so if you really can offer such good glasses, you will have good chances to make good money. I think so if you really can offer such good glasses, you will have good chances to make good money.

]]> By: M Yellen http://blogs.discovermagazine.com/discoblog/2009/01/05/cheap-liquid-glasses-bring-clear-vision-to-the-poor/comment-page-1/#comment-21210 M Yellen Thu, 26 Feb 2009 01:59:07 +0000 http://blogs.discovermagazine.com/discoblog/2009/01/05/cheap-liquid-glasses-bring-clear-vision-to-the-poor/#comment-21210 If all the frames were designed to hold snap in round plastic lenses you could most likely produce the same quality vision correction with existing technology for about $1.00. Pupillary distance would be a problem in the higher corrections but compared to no correction at all it would not be a bad compromise. If all the frames were designed to hold snap in round plastic lenses you could most likely produce the same quality vision correction with existing technology for about $1.00. Pupillary distance would be a problem in the higher corrections but compared to no correction at all it would not be a bad compromise.

]]> By: Uncle Al http://blogs.discovermagazine.com/discoblog/2009/01/05/cheap-liquid-glasses-bring-clear-vision-to-the-poor/comment-page-1/#comment-20184 Uncle Al Wed, 07 Jan 2009 19:11:43 +0000 http://blogs.discovermagazine.com/discoblog/2009/01/05/cheap-liquid-glasses-bring-clear-vision-to-the-poor/#comment-20184 Water refractive index = 1.3333, PDMS silicone oil is 1.406, Nujol mineral oil is 1.477, DC 550 silicone oil is 1.4935, soda lime glass is 1.518, diphenyl ether (commercial heat exchange fluid when biphenyl is added) is 1.579. Santovac polyphenyl ether fluids run 1.62-1.67 and higher (Santovac 5 at 1.630, pour point = 4 C). The eyeglasses need not be chunky. Add a radial tensioner for astigmatism correction. Silicone oils reptate through polymer membranes, constitutng a slow virtual leak. Water refractive index = 1.3333, PDMS silicone oil is 1.406, Nujol mineral oil is 1.477, DC 550 silicone oil is 1.4935, soda lime glass is 1.518, diphenyl ether (commercial heat exchange fluid when biphenyl is added) is 1.579. Santovac polyphenyl ether fluids run 1.62-1.67 and higher (Santovac 5 at 1.630, pour point = 4 C). The eyeglasses need not be chunky. Add a radial tensioner for astigmatism correction.

Silicone oils reptate through polymer membranes, constitutng a slow virtual leak.

]]> By: Samsam http://blogs.discovermagazine.com/discoblog/2009/01/05/cheap-liquid-glasses-bring-clear-vision-to-the-poor/comment-page-1/#comment-20137 Samsam Wed, 07 Jan 2009 04:10:45 +0000 http://blogs.discovermagazine.com/discoblog/2009/01/05/cheap-liquid-glasses-bring-clear-vision-to-the-poor/#comment-20137 An article in Popular Science in the 1970s or 80s described a very similar invention, except there was a thumb-wheel on each earpiece that moved a piston in and out (along the length of the earpiece) alowing the user to change focus. As a 48-year old with natural lenses that no longer adjust, this would be a wonderful product. An article in Popular Science in the 1970s or 80s described a very similar invention, except there was a thumb-wheel on each earpiece that moved a piston in and out (along the length of the earpiece) alowing the user to change focus. As a 48-year old with natural lenses that no longer adjust, this would be a wonderful product.

]]>