Notes
Protection using sunscreen
“Cheek and neck of a 92-year-old female, who used UV-protective moisturizers on her face but not on the neck for 40+ years.”
“Twins (natural age 61) with significant difference in sun exposure. Twin B (right) had approximately 10 hours per week greater sun exposure than twin A (left). Twin A had a body mass index 2.7 points higher than that of twin B. The perceived age difference was 11.25 years.”
“A 69-year-old man presented with a history of gradual thickening and wrinkling of the skin on the left side of his face.” He was a truck driver, and as a result the left side of his face got much more exposure to sunlight than the right side. A similar thing has been documented with the right side of the face of a driver in the UK.
Infuse Medical – Sunscreen Scientific Animation (MOA) (1:42)
Sunscreen 101: Chemical Filters vs Mineral Filters (0:41)
Physics Girl -Sunscreen in UV (12:15)
Doctor Mike – Is Wearing Sunblock Really Bad For You? (8:28)
Veritassium – The World in UV (11:12)
Benefits
In the northern parts of the Soviet Union, some children were treated with UV light to help in the production of vitamin D.
Narrow-band UVB is used for treating eczema and other skin conditions.
Photo-exposing printed circuit boards (PCB’s) in electronics
Gellae Nails – Unleash Your Inner Glow With Our Free UV Lamp Starter Kit (0:20)
Animals that can see in UV
Many birds have females and males that look identical when viewed with human eyes. However, under UV light, there are often differences that are not visible to humans. Because birds can see UV light, they can easily distinguish between males and females.
Biobush – Bird Vision – What Birds See (And You Can’t!) (4:25)