Living · 6 pages · 12 min
Why wet cloth loses some sun protection
Water in the gaps of a weave lets more ultraviolet straight through.
When the purchase is complete, return to the original window. It will refresh.
From the opening
Many fabrics block less ultraviolet once they are wet, because water changes the tiny gaps in the weave. The shirt need not have lost a coating, and the optical path through it changed. The opening covers water softens fiber-air boundaries, stretch opens a soaked knit, and tight or treated cloth loses less.
The rest of the brief — the later sections and the reading notes — opens after Stripe confirms payment.
Inside
- Water softens fiber-air boundaries
- Stretch opens a soaked knit
- Tight or treated cloth loses less
- Sheerness is only a visible hint
- Where the idea stops applying
- A distinction worth keeping
Sources
- Reduced fiber-air scattering when weaves get wet
- Higher ultraviolet transmission through wet fabric