http://www.telescopebuyingguide.com/blog/newtons-original-reflecting-telescope-had-a-primary-mirror-of-33mm-in-diameter-if-a-human-eye-has-a-diameter/ Thu, 17 May 2012 20:58:03 +0000 http://wordpress.org/?v=2.7 hourly 1 http://www.telescopebuyingguide.com/blog/newtons-original-reflecting-telescope-had-a-primary-mirror-of-33mm-in-diameter-if-a-human-eye-has-a-diameter/comment-page-1/#comment-2455 Roger Sun, 07 Mar 2010 04:52:05 +0000 http://www.telescopebuyingguide.com/blog/newtons-original-reflecting-telescope-had-a-primary-mirror-of-33mm-in-diameter-if-a-human-eye-has-a-diameter/#comment-2455 The 33 mm mirrors could see (33/8)^2 times the photons that the humans eye can. This ratio is 17.<a href="http://www.fresh-coffee.com"> Roger</a> The 33 mm mirrors could see (33/8)^2 times the photons that the humans eye can. This ratio is 17. Roger

]]> http://www.telescopebuyingguide.com/blog/newtons-original-reflecting-telescope-had-a-primary-mirror-of-33mm-in-diameter-if-a-human-eye-has-a-diameter/comment-page-1/#comment-2454 David A Thu, 04 Mar 2010 21:12:44 +0000 http://www.telescopebuyingguide.com/blog/newtons-original-reflecting-telescope-had-a-primary-mirror-of-33mm-in-diameter-if-a-human-eye-has-a-diameter/#comment-2454 The area of the human iris, 8 mm, is pi X 16 mm, or about 50.3; the area of Newton's reflector is 16.5 squared X pi, or 855 square millimeters. So the answer is 17. It's the same as the ratio of the diameters squared.<a href="http://www.resumeminers.com/Continuing-Education/Submit-Resume.htm"> David A</a> The area of the human iris, 8 mm, is pi X 16 mm, or about 50.3; the area of Newton’s reflector is 16.5 squared X pi, or 855 square millimeters. So the answer is 17. It’s the same as the ratio of the diameters squared. David A

]]> http://www.telescopebuyingguide.com/blog/newtons-original-reflecting-telescope-had-a-primary-mirror-of-33mm-in-diameter-if-a-human-eye-has-a-diameter/comment-page-1/#comment-2453 David Wed, 03 Mar 2010 12:55:18 +0000 http://www.telescopebuyingguide.com/blog/newtons-original-reflecting-telescope-had-a-primary-mirror-of-33mm-in-diameter-if-a-human-eye-has-a-diameter/#comment-2453 The amount of light collected by a sensor is proportional to the surface area, and the surface area is proportional to the square of the diameter. The telescope's 33 mm aperture is 33/8 = 4.125 times longer on a side, which makes its surface area 4.125^2 = 17.015625 times larger. So the telescope allowed our hypothetical Newton to stuff about 17 times as many photons into his eye.<a href="http://www.jewelrymakingidea.com/wire-jewelry-making.htm"> David</a> The amount of light collected by a sensor is proportional to the surface area, and the surface area is proportional to the square of the diameter. The telescope’s 33 mm aperture is 33/8 = 4.125 times longer on a side, which makes its surface area 4.125^2 = 17.015625 times larger. So the telescope allowed our hypothetical Newton to stuff about 17 times as many photons into his eye. David

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