Eli5: Why does water that dries on glass leave “streaks” or grey markings on the glass?
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Water is rarely pure, so when it evaporates there will be leftovers in the glass. For drinking water it’s often times minerals, for your windows it’s polluted air that goes into the rain clouds. Also explains why our elderly people complain about having to clean the windows more than they used to.
Water is rarely pure, so when it evaporates there will be leftovers in the glass. For drinking water it’s often times minerals, for your windows it’s polluted air that goes into the rain clouds. Also explains why our elderly people complain about having to clean the windows more than they used to.
It’s what called hard water. Minerals are dissolved in the water and when it evaporates the minerals are left as deposits.
It’s what called hard water. Minerals are dissolved in the water and when it evaporates the minerals are left as deposits.
It’s what called hard water. Minerals are dissolved in the water and when it evaporates the minerals are left as deposits.
Tap water has sodium, magnesium, and sometimes potassium salts in it from either 1) dissolving minerals from the source or 2) added during the treatment process. This mineral content or ‘hardness’ can vary from municipality to municipality.
I worked as a QA chemist for a large municipality water system for a couple years and every month or so we’d get a call from a customer complaining about ‘white stuff’ in their water. It was always magnesium salts precipitating out of solution and perfectly harmless.
Tap water has sodium, magnesium, and sometimes potassium salts in it from either 1) dissolving minerals from the source or 2) added during the treatment process. This mineral content or ‘hardness’ can vary from municipality to municipality.
I worked as a QA chemist for a large municipality water system for a couple years and every month or so we’d get a call from a customer complaining about ‘white stuff’ in their water. It was always magnesium salts precipitating out of solution and perfectly harmless.
Tap water has sodium, magnesium, and sometimes potassium salts in it from either 1) dissolving minerals from the source or 2) added during the treatment process. This mineral content or ‘hardness’ can vary from municipality to municipality.
I worked as a QA chemist for a large municipality water system for a couple years and every month or so we’d get a call from a customer complaining about ‘white stuff’ in their water. It was always magnesium salts precipitating out of solution and perfectly harmless.
The water has stuff in it. When it dries, the water turns into a gas and leaves whatever was in it behind.
The water has stuff in it. When it dries, the water turns into a gas and leaves whatever was in it behind.
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