Re: [dylug] Do not heat liquids in a microwave for more than 2 minutes

That was pretty good information.
 
Cheers,
Sandy.

Debajit Adhikary <[email protected]> wrote:
No... this isn't one of the regular funnies :)
... just thought that you should know about it :)

luv
debajit

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A 26-year old person 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 told me 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 water was not boiling, but instantly 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 fairly common occurrence and water (alone)should never be
  heated in a microwave oven. If water is heated in this manner, something
  should be placed in the cup to diffuse the energy such as a wooden stir
  stick, tea bag, etc. 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. Microwave water and other liquids do not always
  bubble when they reach the boiling point. They can actually get
  superheated and not bubble 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 a 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 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 small surface
  scratches inside it that prov! ide a place for the bubbles to form. As the
  bubbles cannot form and release some of the heat that 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.


  If you pass this on ... you could very well save someone from a lot of
  pain and suffering

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