You Must Have Seen People Blowing Out Air To Clean Their Glasses. Why Glasses Become Wet When You Breathe Out Air On Them? Don't Spam Answer Only By Expert And Genius.
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When we breathe out, we exhale carbon dioxide gas along with water vapours. The water vapour on colliding with the surface of the glass gets condensed due to which the glass becomes wet. This slightly wet glass can be easily cleaned with a soft cloth.
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Answer: The air blown from the mouth is hot and the glass of the spectacles is comparatively colder. The hot air we breathe out contains water vapors which turn into tiny droplets of water when it comes in contact with the colder glass. This makes the glass moist and hazy.
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