tag:blogger.com,1999:blog-19092890.post2131076550671211234..comments2024-03-28T17:41:43.970+02:00Comments on Image Sensors World: Single Photon Detection by Human EyeVladimir Koifmanhttp://www.blogger.com/profile/01800020176563544699noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-19092890.post-45689500133323383752016-08-16T11:08:20.544+03:002016-08-16T11:08:20.544+03:00I wondered why I could clearly perceive the scinti...I wondered why I could clearly perceive the scintillation glow of a small LYSO crystal, irradiated by a small lump of natural thorianite when placed right before my eye, myself prepared by sleeping a few hours before the test and preparing the setup for access in total darkness. My experimental cameras later had a hard time detecting this blue light. I have always doubted the six-photons-at-a-time threshold of the eye that I once learned at university. Now let's build a single-photon laser pointer and check out my cat's attention threshold :)Atti Achtnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-32340880370430963542016-08-09T08:30:31.196+03:002016-08-09T08:30:31.196+03:00Didn't Ernest Rutherford perform an extreme se...Didn't Ernest Rutherford perform an extreme self-experiment to detect single photons? I heard of enclosing for days in an dark chamber and of pushing eye sensitivity by using Strychnine?? Can someone confirm this?<br />-DKFAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-85983306895026049952016-08-06T22:43:41.332+03:002016-08-06T22:43:41.332+03:00maybe it's me, but I thought we've arrived...maybe it's me, but I thought we've arrived at this some decades ago?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-49105464702274782692016-08-04T14:53:44.144+03:002016-08-04T14:53:44.144+03:00I've seen material on this topic before, mostl...I've seen material on this topic before, mostly: G. Field (see ref 4 etc)<br /><br />[ref 4] Field, G. D., Sampath, A. P. & Rieke, F. Retinal processing near absolute threshold: from behavior to mechanism. Annu. Rev. Physiol. 67, 491–514 (2005).<br /><br />It is an interesting topic, one that highlights a) the superb properties of biological eyes and b) shows the advantages of various network, thresholding and signal addition schemes shown in physiology.<br /><br />Very nice...E Fisherhttp://www.eng.ed.ac.uknoreply@blogger.com