Makeup Quote by Daniel James Brown
““Under normal circumstances, at sea level, the eye can absorb UVB rays without damage. But with every thousand feet in elevation gain, the strength of ultraviolet rays increases by 5 percent. So at the elevation of Donner Lake, for instance, UVB rays are approximately 30 percent stronger than at sea level.””
About This Quote
Source Book: The Lost City of Z by Daniel James Brown, 2009
UVB exposure increases with altitude; at higher elevations like Donner Lake, UVB is about 30% stronger than sea level, raising skin‑damage risk.
In simple terms: UVB is stronger at high altitudes.
Key Takeaway
Protect skin at altitude.
Themes
sun safety
altitude
UVB
health
risk
Mood
cautious
informative
practical
Type
advice
educational
health
When to use this quote
- hiking
- mountain climbing
- outdoor sports
- travel planning
- skin care routines
Key Concepts
photobiology
environmental health
epidemiology
Questions to Reflect On
- Do you adjust sun protection by altitude?
- What other risks rise with elevation?
A Different Perspective
Sunscreen may not fully block increased UVB.
