# hot/warm water

**URL:** <https://boards.straightdope.com/t/hot-warm-water/150138>\
**Category:** Factual Questions\
**Created:** [January 22, 2003, 2:58am UTC](https://boards.straightdope.com/t/hot-warm-water/150138 "2003-01-22T02:58:44Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![DaddyTimesTwo](https://avatars.discourse-cdn.com/v4/letter/d/f07891/32.png) [@DaddyTimesTwo](https://boards.straightdope.com/u/DaddyTimesTwo)\
**Post date:** [January 22, 2003, 2:58am UTC](https://boards.straightdope.com/t/hot-warm-water/150138/1 "2003-01-22T02:58:44Z")

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Why is it hazy? I was warming my son’s bath tonight . The water was perfectly clear (well, not _perfectly_, but you know) and as I added warm water it got all clouded.

WHY? I’ve wondered this for years.

Thanks.

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**Author:** ![Q.E.D](https://avatars.discourse-cdn.com/v4/letter/q/51bf81/32.png) [@Q.E.D](https://boards.straightdope.com/u/Q.E.D)\
**Post date:** [January 22, 2003, 3:07am UTC](https://boards.straightdope.com/t/hot-warm-water/150138/2 "2003-01-22T03:07:07Z")

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The haziness is due to tiny air bubbles. The ability of a liquid to retain dissolved gasses is inversely proportional to its temperature. Adding hot water to cooler water causes some of the gases to come out of solution, hence the haziness.

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**Author:** ![Jinx](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@Jinx](https://boards.straightdope.com/u/Jinx)\
**Post date:** [January 22, 2003, 3:07am UTC](https://boards.straightdope.com/t/hot-warm-water/150138/3 "2003-01-22T03:07:27Z")

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In general, there are gasses dissolved in our water. However, all gas is less soluable at increased temps. Also, add to this the fact that, when moving through the pipes, the motion agitates the gas encouraging it to settle out (as bubbles) of the water. So, the cloudy nature of the water you’re witnessing is the gas escaping from the water as millions of tiny bubbles… - Jinx

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**Author:** ![Jinx](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@Jinx](https://boards.straightdope.com/u/Jinx)\
**Post date:** [January 22, 2003, 3:08am UTC](https://boards.straightdope.com/t/hot-warm-water/150138/4 "2003-01-22T03:08:42Z")

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Darn! Out-posted again! …Just like the short monster in Monsters, Inc - on the cover of the magazine, etc! - Jinx 😉

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**Author:** ![Q.E.D](https://avatars.discourse-cdn.com/v4/letter/q/51bf81/32.png) [@Q.E.D](https://boards.straightdope.com/u/Q.E.D)\
**Post date:** [January 22, 2003, 3:10am UTC](https://boards.straightdope.com/t/hot-warm-water/150138/5 "2003-01-22T03:10:46Z")

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Hehehe…beat ya to it by a few milliseconds, Jinx. 😉

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**Author:** ![NotMrKnowItAll](https://avatars.discourse-cdn.com/v4/letter/n/6bbea6/32.png) [@NotMrKnowItAll](https://boards.straightdope.com/u/NotMrKnowItAll)\
**Post date:** [January 22, 2003, 3:15am UTC](https://boards.straightdope.com/t/hot-warm-water/150138/6 "2003-01-22T03:15:58Z")

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Tiny Bubbles in the bath  
make me happy, make me feel fine  
tiny bubbles make me warm all over  
with a feeling that I’m going to love you  
till the end of time

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**Author:** ![DaddyTimesTwo](https://avatars.discourse-cdn.com/v4/letter/d/f07891/32.png) [@DaddyTimesTwo](https://boards.straightdope.com/u/DaddyTimesTwo)\
**Post date:** [January 22, 2003, 3:23am UTC](https://boards.straightdope.com/t/hot-warm-water/150138/7 "2003-01-22T03:23:02Z")

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Is this a record? Five replies but ony one answer?

Thanks people. Mystery solved.

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**Author:** ![Q.E.D](https://avatars.discourse-cdn.com/v4/letter/q/51bf81/32.png) [@Q.E.D](https://boards.straightdope.com/u/Q.E.D)\
**Post date:** [January 22, 2003, 3:30am UTC](https://boards.straightdope.com/t/hot-warm-water/150138/8 "2003-01-22T03:30:43Z")

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No, there were TWO answers–both the same 😛