WikiWirral Wirral's Biggest Online Forum
Forum Stats
12182 Members
65 Forums
72600 Topics
978318 Posts
103 posts in the last 24hrs
Max Online: 7831 @ 8th Apr 2013 4:18pm
Who's Online - Click Me
95 registered (11kendo, 17 invisible), 1587 Guests and 200 Spiders online.
Key: Admin, Global Mod, Mod
Social Media : Follow Us


(Views 7days)This Weeks Most Read
Secretive mega shake-up of NHS could cost 15 mil 516
Need help 406
Wirral High Tides? 366
Found a mobile phone 14/01/2017 WALLASEY 362
Sometimes You Could Strangle Someone 346
Paypal help 334
Asbestos shed removal 328
When we live to be a 100 yrs old 279
Best Price for Scarpping my car 277
RAC ,AA v Breakdown Recovery 266
New General Forums
The Scouse Accent
by palemoon
Yesterday at 07:49 PM
birthday wishes
by sunnyside
Yesterday at 12:48 PM
The Green Eyed Girl
by granny
17th Jan 2017 10:33pm
Breastfeeding Dads Want to Be A Breastfeeding Hero
by fish5133
16th Jan 2017 1:24pm
New Wirral History
753 Sea Horse, Unit 9, Wallasey Waterfront
by Norton
Yesterday at 09:07 PM
What was County Hall, Abbey Street, Birkenhead?
by yoller
15th Jan 2017 1:28pm
752 The Old Manor Club, Withens Lane, Liscard
by Norton
13th Jan 2017 2:20pm
751 Plough Inn, Mount Pleasant Rd, New Brighton
by Norton
13th Jan 2017 1:38pm
351 Prince Alfred 30 Tunnel Road 30 30 to 32
by yoller
8th Jan 2017 7:18pm
Forum Tips
Photo Gallery Forums
fireworks on the Mersey last night
Hadlow train station
Topic Replies
Parking Charges
by diggingdeeper
Secretive mega shake-up of NHS could cost 15 mil
by diggingdeeper
Kitten found Arrowe park car park
by Greenwood
Taylors Villas 1874 any info?
by diggingdeeper
Musicals
by diggingdeeper
Paper Recycling. ?
by venice
11:47 AM
Puppy wanted good careing home offered
by venice
11:41 AM
New Car tax Rates For New Cars
by diggingdeeper
04:40 AM
When we live to be a 100 yrs old
by venice
12:03 AM
January
M Tu W Th F Sa Su
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31
Recent Posts : What's On ?
Indian/Jazz fusion music Liverpool
by buddy
17th Jan 2017 9:46am
Chinese New Year Liverpool
by paxvobiscum
15th Jan 2017 11:08am
Topic Options
Rate This Topic
#783683 - 7th Apr 2013 10:39am IMPORTANT SAFETY NOTICE
venice Offline

Forum Master

Registered: 21st Jul 2011
Posts: 2492
Loc: Wirral
Many of you will know this information already , but as its been sent to me by my health and safety relative, I have promised to pass it on just incase it saves someone from a nasty accident.

Its been checked out on Snopes and appears to be true.



Subject: Boiling water in microwave


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 water 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 placed in the cup to diffuse the energy such as a wooden stir stick, tea bag, etc, (nothing metal).

General Electric's Response:

Thanks for contacting us; I will be happy to assist you. 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.

Here is what a local high school 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 any time 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 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.

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

Top
Wirral Info : Advertising
Click me for more Information......

* * * Emelec Electrical Services * * *
Now Advertise with WikiWirral.
WikiWirral stats 35,000 Page Views a Day +500 Search Engines.. Click Me
#783685 - 7th Apr 2013 10:47am Re: IMPORTANT SAFETY NOTICE [Re: venice]
muffermurphy Offline
Beginner

Registered: 8th Mar 2012
Posts: 5
Loc: wirral
there's a new fangled invention called the kettle out now.
give it a try laugh

Top
#783688 - 7th Apr 2013 10:54am Re: IMPORTANT SAFETY NOTICE [Re: venice]
Sallybear Offline
Smartchild

Registered: 5th Apr 2009
Posts: 587
Loc: Wirral
Nearly every microwave cooking instructions require you to let things stand. There is a reason for this. Also it never hurts to stir something while it is cooking in the microwave, if something was cooked in a pan you would do this, ok not water perhaps but anything else.

Top
#783695 - 7th Apr 2013 11:07am Re: IMPORTANT SAFETY NOTICE [Re: venice]
kittykat Online   content
Enthusiast

Registered: 1st Jan 2011
Posts: 156
Loc: Just here
You have a designated health & safety relative? seeyu

Top
#783700 - 7th Apr 2013 11:31am Re: IMPORTANT SAFETY NOTICE [Re: kittykat]
venice Offline

Forum Master

Registered: 21st Jul 2011
Posts: 2492
Loc: Wirral
Ha! ---our original one was called 'mother in law'

Top
#783720 - 7th Apr 2013 1:21pm Re: IMPORTANT SAFETY NOTICE [Re: venice]
Blueskier Offline
Enthusiast

Registered: 22nd Mar 2013
Posts: 194
Loc: Wallasey
This has been well known for some time. If you put something like a wooden stick in the water while it is heating it wont happen. Something about agitating the air in the water.

Top
#783775 - 7th Apr 2013 4:59pm Re: IMPORTANT SAFETY NOTICE [Re: venice]
beanie65 Offline
Member

Registered: 21st Dec 2012
Posts: 70
Loc: wirral
Here's a link to an experiment done on myth busters.
http://www.youtube.com/watch?v=1_OXM4mr_i0

Top

Moderator:  Mod 
Random Wirral Images

Click to View Topic.
Newest Topics
Parking Charges
by diggingdeeper
1 second ago
Kitten found Arrowe park car park
by Greenwood
19 minutes 11 seconds ago
Paper Recycling. ?
by fish5133
Today at 11:16 AM
Puppy wanted good careing home offered
by chris7777
Today at 09:07 AM
New Car tax Rates For New Cars
by fish5133
Today at 01:42 AM
For Sale & Free
Wanted freezer kit
by dodie
Yesterday at 09:58 PM
2pioneer speakers Free
by dodie
Yesterday at 09:54 PM
Looking to swap an xbox one for a ps4
by surykata
Yesterday at 08:10 PM
Wanted old cars spares or repairs
by vw_kyle
17th Jan 2017 1:08pm
Astra 1.9 diesel 06
by lansyp
16th Jan 2017 8:47pm
Featured Member
Registered: 3rd Jan 2017
Posts: 3
Newest Members
Collette63, shellylou, sgjrob, pjmeaneydog, jennynoonan
12182 Registered Users
Today's Birthdays
No Birthdays
New Wirral Info
Paper Recycling. ?
by fish5133
Today at 11:16 AM
Paypal help
by venice
17th Jan 2017 8:59pm
Brown Bin Collections Restarting Today 17th Jan
by fish5133
17th Jan 2017 9:04am
Indian/Jazz fusion music Liverpool
by paxvobiscum
15th Jan 2017 11:19am
Chinese New Year Liverpool
by paxvobiscum
15th Jan 2017 11:08am
News : New Topics
Parking Charges
by diggingdeeper
1 minute 27 seconds ago
Spectacles found.
by Beethoven
Yesterday at 01:02 PM
When we live to be a 100 yrs old
by granny
Yesterday at 11:46 AM
Secretive mega shake-up of NHS could cost 15 mil
by RUDEBOX
16th Jan 2017 5:58pm
Lost Mobile Phone
by spinner1
15th Jan 2017 6:56pm
New Enthusiast Forums
Kitten found Arrowe park car park
by Greenwood
19 minutes 11 seconds ago
Puppy wanted good careing home offered
by chris7777
Today at 09:07 AM
New Car tax Rates For New Cars
by fish5133
Today at 01:42 AM
Car Value Sites Parkers Auto Trader
by fish5133
Yesterday at 06:05 PM
A Little Girl Gets A Kitten
by Uffda
17th Jan 2017 3:45pm
(Views 24hrs)Trending Newest Topics
Car Value Sites Parkers Auto Trader 124
New Car tax Rates For New Cars 111
Puppy wanted good careing home offered 79
Paper Recycling. ? 68
753 Sea Horse, Unit 9, Wallasey Waterfront 62
Wanted freezer kit 59
The Scouse Accent 56
Looking to swap an xbox one for a ps4 48
Kitten found Arrowe park car park 11
Parking Charges 0
Wirral Sunrise Sunset
Sunrise Thu 8:14am
Sunset Thu 4:31pm
Local Time Thu 3:04pm
WikiWirral Can . . . .