Hypoxia at night

[Splinter562]

You should check out the Pilot's Handbook of Aeronautical Knowledge, Chapter 16: Aeromedical Factors

http://www.faa.gov/library/manuals/aviation/pilot_handbook/

The last part of the chapter deals with night vision nicely.

[beaky]

C, that is very interesting. My teacher now wants to know WHY are eyes more susceptible to the effects of hypoxia at night. :-?

Again:

http://www.aoa.org/x5352.xml

[beaky]

[quote][quote]There is some basis for this, although it is not every night if my memory serves right (been 8 years since that class).

[SubZer0]

Thank you guys for the interest


The answer is as follows:

During the night, the eyes use rods much more than cones. These rods are 10,000 times more sensitive than cones and therefore much more susceptible to hypoxia.

It's definitely in here, where Splinter said to look. Just read the entire section about night vision -- it's very interesting.

http://www.faa.gov/library/manuals/avia ... _handbook/

[Mitch.]

Some great information here. I trust we all learnt something, I know I have. Very helpful guys. 8-)

[C]

[quote][quote][quote]There is some basis for this, although it is not every night if my memory serves right (been 8 years since that class).