Chatroom
 

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Bad Astronomy and Universe Today Forum > Science and Space > Science and Technology
Register FAQ Members List Calendar Mark Forums Read

   

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #61 (permalink)  
Old 15-February-2009, 04:54 AM
neilzero neilzero is offline
Established Member
 
Join Date: Nov 2005
Posts: 1,249
Default

The frequency of the electromagnetic radiation in a micro wave oven is thousands of times lower than gamma and x rays, so negligible ionization is produced in the food unless you heat the food to very high temperature. Typically food that has been microwaved is safer than food heated by other methods, but I suppose rare health exceptions occur. If heated in a plastic container, there is some possibility that toxic gases from the plastic will enter the food, but that is also true of heating food in plastic containers by other food heating methods. Neil
Reply With Quote
  #62 (permalink)  
Old 15-February-2009, 06:54 PM
TrAI TrAI is offline
Established Member
 
Join Date: May 2003
Location: Norway
Posts: 945
Default

Quote:
Originally Posted by neilzero View Post
The frequency of the electromagnetic radiation in a micro wave oven is thousands of times lower than gamma and x rays, so negligible ionization is produced in the food unless you heat the food to very high temperature. Typically food that has been microwaved is safer than food heated by other methods, but I suppose rare health exceptions occur. If heated in a plastic container, there is some possibility that toxic gases from the plastic will enter the food, but that is also true of heating food in plastic containers by other food heating methods. Neil
I would think that contamination of that kind could happen from other materials too, for example, heavy metals are sometimes used in pigments for glazed ceramics and coloured glass.

It is actually interesting that one so often hear about how bad microwaves are, how they reduce the nutrients in the food, create carsinogenic substances and so on, when these are very real problems with traditional methodes for food preparation. High temperatures can create carcinogens and release substances from the cooking gear, cooking in water can wash/disolve out nutrients, coking over fires or smoking food can introduce unhealthy materials from the smoke, and so on. I would think that these problems would actually be less likely to occur with microwave ovens.
__________________
Game over, you lose, we hope you enjoyed playing the exciting game of Thermodynamics...
Reply With Quote
  #63 (permalink)  
Old 15-February-2009, 07:11 PM
Jeff Root Jeff Root is offline
Order of Kilopi
 
Join Date: Dec 2004
Location: Minneapolis
Posts: 6,167
Default

TrAI,

That is what I suspected when I started this thread, and what I wanted
eventually to learn about. Those carcinogens produced in ordinary oven,
stovetop, and grill cooking sure are tastey, though! I'm not going to give
those up for the health advantages of microwaved food!

-- Jeff, in Minneapolis
__________________
http://www.FreeMars.org/jeff/

"I find astronomy very interesting, but I wouldn't if I thought we
were just going to sit here and look." -- "Van Rijn"

"The other planets? Well, they just happen to be there, but the
point of rockets is to explore them!" -- Kai Yeves
Reply With Quote
  #64 (permalink)  
Old 15-February-2009, 08:35 PM
TrAI TrAI is offline
Established Member
 
Join Date: May 2003
Location: Norway
Posts: 945
Default

Quote:
Originally Posted by Jeff Root View Post
TrAI,

That is what I suspected when I started this thread, and what I wanted
eventually to learn about. Those carcinogens produced in ordinary oven,
stovetop, and grill cooking sure are tastey, though! I'm not going to give
those up for the health advantages of microwaved food!

-- Jeff, in Minneapolis
Well, I suppose one have to find a balance between safety and enjoying the ride, the game is destined to be lost sooner or later, and then it is to late to play.
__________________
Game over, you lose, we hope you enjoyed playing the exciting game of Thermodynamics...
Reply With Quote
  #65 (permalink)  
Old 16-February-2009, 09:09 AM
mugaliens's Avatar
mugaliens mugaliens is offline
Order of Kilopi
 
Join Date: Dec 2005
Location: Colorado Springs
Posts: 12,547
Default

Quote:
Originally Posted by TrAI View Post
High temperatures can create carcinogens and release substances from the cooking gear, cooking in water can wash/disolve out nutrients, coking over fires or smoking food can introduce unhealthy materials from the smoke, and so on. I would think that these problems would actually be less likely to occur with microwave ovens.
When meat is roasted next to a fire (not over it, so it's not subject to the harmful smoke from the burned grease), which cooks the meat, renders the fat into grease which drips into the fire, burning it (instead of leaving a mess). Many fruits and vegetables should be eaten raw. A few, such as potatos, should be cooked, both to make it more digestible, as well as to remove (mostly) harmful toxins (glycoalkaloids). Exposure to light, and age, cause greening due to the growth of chlorophyl, and seed tubers (the "eyes" of the potato), both of which contain much higher concentrations than the main part of the potato itself. Interestingly, the highest concentration is found immediately beneath the skin, which is perhaps one reason why, intuitively, we began skinning our potatoes. Baked potatoes, however, experience enough heat to minimize these toxins.

Microwaved potatoes, however, may not! Then again, they may... Just how hot does the surface of a nuked potato get during those 4 minutes on high?
__________________
If I set the budget, we'd have Ares and more. Unfortunately, I don't set the budget, and Ares is just too expensive and too far out for us to accomplish our goals within the budget we were given.

If we halt the ISS, all versions of Ares, and transport Orion and Altair aboard DIRECTv3's Jupiter family of Shuttle-Derived Launch Vehicles, we just might make it back to the Moon by 2020.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



Similar Threads
Thread Thread Starter Forum Replies Last Post
Kids putting their heads in microwave ovens to get high? banquo's_bumble_puppy Off-Topic Babbling 91 31-December-2007 05:31 PM
Cosmic Microwave Background prediction iantresman Space/Astronomy Questions and Answers 11 23-September-2007 07:12 PM
Microwave View of the Universe's Oldest Light Fraser Universe Today Story Comments 0 07-December-2005 11:42 PM
The Cosmic Ray / Cosmic Microwave Paradox Jerry Against the Mainstream 6 28-June-2005 08:47 PM
Big Bang & Cosmic Microwave Background Tim Thompson Against the Mainstream 3 08-June-2002 01:11 AM


All times are GMT. The time now is 11:44 AM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.0.0
©  2006 Bad Astronomy and Universe Today