Night hiking
deficient vision have or developed an increase in night vision? My simple understanding of eye physiology is that there are rods (for night vision) and...
johngeyles 2006-02-21 22:51:16 #40116

Re: Night hiking
People with complete color blindness use the rods for all visual tasks, they do not have functioning cones. People with normal vision use the cones in...
Bob Washburn 2006-02-21 18:38:11 #40115

Re: Night vision considerations
The Horse Whisperer claimed that while he was completely color blind, his distance sight was much better than anyone he knew. He felt this was how he...
Kenneth McNamara 2006-02-21 18:36:27 #40114

Madison Wisconsin Talk
If any of you are from the Madison area, I'll be doing a talk this Thursday night at REI. The talk will begin at 7:00. I'm just going over some basic...
mhill5252 2006-02-21 18:23:20 #40113

Night vision considerations
" most color deficient persons compensate well for their defect and may even discover instances in which they can discern details and images that would escape...
Phil Gutkin 2006-02-21 18:20:52 #40112

Night hiking
John, I wonder if there is any truth to the rumor that people with color deficient vision have or developed an increase in night vision? Phil -- In...
Phil Gutkin 2006-02-21 18:04:48 #40111

Re: Hermit/BA Day Hike
getting themselves out once they get to IG (likely in the dark) -- I'd totally even PLAN to get from IG to the rim in the dark. Hiking in the dark is so...
johngeyles 2006-02-21 11:25:47 #40110

Re: Mineral Canyon question
See my comment for words "severe drops". Off-trail hikers frequently climb to a lot of places that don't have a trail or hike-able terrain. The list is...
Bob Marley 2006-02-20 15:06:36 #40109

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