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Photography

Bo Zarts

(26,255 posts)

7. Yes, the partial pressure of oxygen decreases logarithmically with increasing altitude ..

Reply to surfered (Reply #1)

Fri Dec 26, 2025, 11:00 AM

Dec 26

But you can fly an airplane at 10,000 feet without supplemental oxygen, so it is certainly considered still "breathable" air. The first two days or so working this lookout really tired me out. But I acclimated quickly, and was soon practicing Fire Lookout Zen: chopping wood and hauling water.