Re: [70ATTENDEES] Water color

Tony Li <tli@cisco.com> Wed, 05 December 2007 16:06 UTC

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From: Tony Li <tli@cisco.com>
Subject: Re: [70ATTENDEES] Water color
Date: Tue, 4 Dec 2007 23:48:36 -0800
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On Dec 4, 2007, at 11:02 PM, Weiqiang Sun wrote:

> And I see that a lot tiny bubbles comes out the water, especially  
> when I
> take
> water from the hot pipe. It may have nothing to do with the rain.  
> But, why
> is that?


Many water faucets are equipped with an aeration screen.  This  
increases the force of the flow without actually requiring the full  
volume.  If you let the water sit for a few minutes, some of the air  
that was mixed with the water comes out of solution.  Hot water  
absorbs more air coming out of the tap, so when it cools, it has more  
air coming out of solution.

This isn't harmful.  If it's bothersome, most screens are easily  
removable.

Tony

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