Hi Sheila,

This reminded me of an incident one day when Mike was making coffee in the 
microwave.  We had purchased some new glass mugs the previous day and he 
used one.  He heated the coffee for the normal amount of time and went to 
remove it.  As he did so, the whole cup just melted into powder, minus the 
piece of handle he was holding in his fingers.  Thankfully, he was holding 
the mug over our breakfast bar and away from his body and he was not hurt. 
We were very thankful that day to the Lord for His goodness to us! 
Certainly, only this tiny handle piece remined of the mug!

--
Carol - Reading, UK

To you, o Lord, I lift up my soul;
In You I trust, o my God.  . . .."  PS25:1-2 NIV.
----- Original Message ----- 
From: "Sheila Killian" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, August 30, 2006 4:41 PM
Subject: Fw: HEATING WATER IN A MICROWAVE - Caution


> Heating Water In A Microwave, Caution!
> Microwaving Water!
> : >
> : >     A 26-year old man decided to have a cup of coffee. He took a cup 
> of
> : > water and put it in the microwave to heat it up (something that he had
> : > done numerous times before). I am not sure how long he set the timer
> for,
> : > but he wanted to bring the water to a boil. When the timer shut the 
> oven
> : > off, he removed the cup from the oven. As he looked into the cup, he
> noted
> : > that the w ater was not boiling, but suddenly the water in the cup 
> "blew
> : > up" into his face. The cup remained intact until he threw it out of 
> his
> : > hand, but all the water had flown out into his face due to the build 
> up
> of
> : > energy. His whole face is blistered and he has 1st and 2nd degree 
> burns
> to
> : > his face which may leave scarring.
> : >
> : >
> : >     He also may have lost partial sight in his left eye. While at the
> : > hospital, the doctor who was attending to him stated that this is a
> fairly
> : > common occurrence and water (alone) should never be heated in a
> microwave
> : > oven. If water is heated in this manner, something should be pl aced 
> in
> : > the cup to diffuse the energy such as a wooden stir stick, tea bag,
> etc.,
> : > (nothing metal).
> : >
> : >     It is however a much safer choice to boil the water in a tea 
> kettle.
> : >
> : >     General Electric's Response:
> : >
> : >     Thanks for contacting us, I will be happy to assist you. The 
> e-mail
> : > that you received is correct. Micro waved water and other liquids do 
> not
> : > always bubble when they reach the boiling point. They can actually get
> : > superheated and not bu bble at all. The superheated liquid will bubble
> up
> : > out of the cup when it is moved or when something like a spoon or tea
> bag
> : > is put into it.
> : >
> : >
> : >     To prevent this from happening and causing injury, do not heat any
> : > liquid for more than two minutes per cup. After heating, let the cup
> stand
> : > in the microwave for thirty seconds before moving it or adding 
> anything
> : > into it.
> : >
> : >     Here is what our local science teacher had to say on the matter:
> : > "Thanks for the microwave warning. I have seen this happen before. It 
> is
> : > caused by a phenomenon known as super heating. It can occur anytime
> water
> : > is heated and will particularly occur if the vessel that the water is
> : > heated in is new, or when heating a small amount of water (less than
> half
> : > of a cup).
> : >
> : >     What happens is that the water heats faster than the vapor bubbles
> can
> : > form. If the cup is very new then it is unlikely to have a small 
> surface
> : > scratches inside it that provide a place for the bubbles to form. As 
> the
> : > bubbles cannot form and release some of the heat has built up, the
> liquid
> : > does not boil, and the liquid continues to heat up well past its 
> boiling
> : > point.
> : >
> : >     What then usually happens is that the liquid is bumped or jarred,
> : > which is just enough of a shock to cause the bubbles to rapidly form 
> and
> : > expel the hot liquid. The rapid formation of bubbles is also why a
> : > carbonated beverage spews when opened after having been shaken."
> : >
> : >     If you pass this on you could very well save someone from a lot of
> : > pain and suffering
> : >
> : >
> : >
> : >
> : >
> : >
> : >
> : >
> : >
> :
> :
> :
> : -- 
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> 8/29/2006
> :
> :
>
>
>
> -- 
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> Checked by AVG Free Edition.
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