Why do things turn dark when wet?
In: Chemistry
Simplifying what [bibliophile785](https://old.reddit.com/r/explainlikeimfive/comments/e6czsd/eli5_why_do_things_turn_dark_when_wet/f9pb3v6/) [has already said](https://old.reddit.com/r/explainlikeimfive/comments/e6czsd/eli5_why_do_things_turn_dark_when_wet/f9pdjxl/).
When light encounters any boundary (air to thing, air to water, water to thing, etc.) some of it reflects and some of it gets absorbed. Now if you make the same object wet, light has 3 boundaries that it encounters (water / wet layer, thing, water / wet layer again once it gets reflected from thing), hence slightly more of it is absorbed and lesser of the reflected light meets our eye. So, the objects appears darker because of the lesser light it reflects.
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