An ultrasonic humidifier works by vibrating a stainless steel plate using
a Piezo transducer at around 40,000 vibrations per second.
 It is essentially very much like a Piezo tweeter [high frequency speaker]
found in modern sound systems.
 The water molecules seperate at those frequencies and bounce into the air
much like sand placed on a woofer bounces with the bass beat.
 It's the same principle that the dentist uses to descale / de-stain your
teeth [no distain intended], Ultrasonic toothbrushes use [you've seen the
commercials with the brush making bubbles in the water?] and jewelers use
to clean intricate jewelry.

 In the past, getting an amplifier that would produce such high frequencies
and a speaker that would emit them, was very difficult and Ultrasonics were
bulky and very expensive.
 They may have used quartz as the transducer as quartz has natural Piezo
capabilities. [ie  If you compress or otherwise distort the crystal, it
produces electricity.  If you feed electricity to the crystal, it distorts
itself.  If you smack two dry quartz rocks together on a very dark night,
you'll see a blue electrical spark jump between them.]

 Now, IC chips will attain high frequencies easily [ 40 kilohertz is
NOTHING compared to a 4 gigahertz computer CPU]  and artificial ceramic
piezo crystals are way cheap...and much more efficient than the old stuff.

 Due to the fact that water molecules are vibrating like crazy, yes, there
is some heating as a byproduct.

You've probably felt your smaller teeth get hot while being cleaned at the
dentist?  That's because the vibrational energy is being transmitted to the
tooth by the water stream and the low mass tooth starts vibrating in
sympathy. [Don't worry, the dentist won't cook your teeth before you start
screaming real loud.  They don't strap you in, so, you can always kill him
first?]

 In a humidifier, that small amount of heat is dissipated by the dispersing
and expanding water quite rapidly.

 A microwave heats water the same way [By making it vibrate] using a
different method to deliver high frequency vibrational energys. [ An
intentional "product" vs a sometimes uncomfortable by-product]

Ode

At 01:18 PM 12/1/2005 -0800, you wrote:
>
>
>> thank you jim,
>> 
>> very interesting info here from you....
>> 
>> how does the ultrasonic actually work?  does it heat up the water?
>> 
>> and why do you put dmso in there too?  i thought it was just used for
better penetration of skin & cells topically.
>> 
>> thanks,
>> angel
>> 
>> 
>> ----- Original Message ----- 
>> From: "Acmeair" <[email protected]>
>> To: <[email protected]>
>> Sent: Tuesday, November 29, 2005 16:01
>> Subject: Re: CS>cs and humidifiers
>> 
>> 
>>>i bought a sunbeam "ultrasonic" humidifier off of ebay for around 34 
>>> bucks. for a humidifier to get the cs into the mist, the humidifier has 
>>> to an "ultrasonic" model. if it is a cool mist model, the cs remains in 
>>> the reservoir. my main mix is  90% cs, and 10 % dmso. i have added msm 
>>> one time, but this 90-10 mix works great on colds, etc.
>>> 
>>> jim
>>
>
>
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