Physics
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Lenses
Lenses
Why do my spectacles fog up when I come indoors from the cold?
Admin User
Asked 1 week ago
1 answers
Answers (1)
Admin User
Answered 1 week ago
Warm, moist indoor air condenses on cold lens surfaces. Anti-fog coatings reduce this by spreading water droplets evenly into a thin layer instead of tiny beads.
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