The Koi Forum

The place where koi hobbyist's and dealers meet
 
HomeHome  PortalPortal  SearchSearch  RegisterRegister  Log in  
Search
 
 

Display results as :
 
Rechercher Advanced Search
Keywords
nexus filter western shimmies pump cape electricity soragoi sealer pumps spawn BLACK media lice List disease airlift dealers Bead dropsy supaverm vacuum babies Bobby SPOTS Waterplants
Latest topics
» Help! What do o do with fry??
Never boil water in a microwave oven Icon_minitimeSat Jun 01, 2019 2:34 am by Zombolina

» A magical Japanese garden
Never boil water in a microwave oven Icon_minitimeFri May 24, 2019 1:45 pm by atb tv

» Nogyosai Nagaoka koi show 2018 The vats part 2
Never boil water in a microwave oven Icon_minitimeSun Nov 25, 2018 11:52 am by atb tv

» Nogyosai Nagaoka koi show 2018 the vats part 1
Never boil water in a microwave oven Icon_minitimeSun Nov 25, 2018 10:58 am by atb tv

» Pump size relative to the rest of my equipment
Never boil water in a microwave oven Icon_minitimeFri Aug 31, 2018 10:04 am by Bilaal

» Off the grid
Never boil water in a microwave oven Icon_minitimeSat Aug 25, 2018 5:53 pm by GREGB

» Japan souvenir 2017 part 1
Never boil water in a microwave oven Icon_minitimeSun Jan 21, 2018 12:59 pm by atb tv

» Ikeage 2017 of 80cm+
Never boil water in a microwave oven Icon_minitimeWed Dec 27, 2017 1:58 pm by atb tv

» the ponds in 2017
Never boil water in a microwave oven Icon_minitimeTue Dec 26, 2017 3:14 pm by atb tv

October 2019
MonTueWedThuFriSatSun
 123456
78910111213
14151617181920
21222324252627
28293031   
CalendarCalendar
Affiliates
free forum


Share
 

 Never boil water in a microwave oven

View previous topic View next topic Go down 
AuthorMessage
Admin
Admin
Admin

Posts : 2521
Reputation : 46
Join date : 2007-07-25
Age : 57
Location : Cape Town

Never boil water in a microwave oven Empty
PostSubject: Never boil water in a microwave oven   Never boil water in a microwave oven Icon_minitimeThu Jun 19, 2008 11:55 am

THE DANGERS OF BOILING WATER IN A MICROWAVE OVEN

The following e-mail was sent to General Electric:

“I feel that the following information that anyone who uses a microwave oven to heat water should know. My 26-year old son 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 that he wanted to bring the water to boil. When the time shut the oven of, he removed the cup from the oven. As he looked into the cup, he noted that the water in the cup 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 a fairly common occurrence and water (alone) should never be heated in the 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 water in a teakettle.
Please pass this information on to friends and family.

General Electric’s Response:

“The e-mail that you received is correct. Microwaved water and other liquids do not always bubble when they reach 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. I hope this helps. Should you need any further assistance, please contact us.

Response from a Scientist

“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 vapour bubbles can form. If the cup is very new then it is unlikely to have 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 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. The rapid formation of bubbles is also why a carbonated beverage spews when opened after having been shaken”.

_________________
Paul Viljoen
E Mail: koi@absamail.co.za ; http://www.koionline.co.za

Koi are not my whole life but make my life whole
Back to top Go down
http://www.koionline.co.za
Noris



Posts : 8
Reputation : 0
Join date : 2007-07-26
Location : Melkbosstrand, Western Cape

Never boil water in a microwave oven Empty
PostSubject: Re: Never boil water in a microwave oven   Never boil water in a microwave oven Icon_minitimeThu Jun 19, 2008 2:32 pm

The same principle applies when you try to boil distiled water. If there are no impurities in the water, the water temperature goes far beyond the normal 100 degrees. As soon as you throw sugar or anything alike in the warm distiled water(above 100 degrees) , the container will probably explode or at least, the water will all bubble out.
Back to top Go down
 

Never boil water in a microwave oven

View previous topic View next topic Back to top 
Page 1 of 1

 Similar topics

-
» Water pump and tap
» What is on my tomato leaves???
» Fried Cornbread Cakes

Permissions in this forum:You cannot reply to topics in this forum
The Koi Forum :: General :: Chat - Not Koi related-