Tuesday, August 6, 2019

Microwaving food for long ,is it harmful?

I read this at quora:

It does not make it radioactive, but it DOES make it unhealthy. Microwave REHEATED food is okay providing it is not microwaved for very long. I know that there are going to be many people who argue I am wrong, but that’s because they don’t understand the physics and chemistry involved. What we call “temperature” is a measurement of the translational energy of molecules. That is, their motion back and forth. There is also vibrational energy and rotational energy that we have no simple way of measuring, but kinetic energy is kinetic energy no matter what direction it involves. Normally this isn’t a problem because if you heat something up by conventional methods, translational energy is proportional to the temperature, so thermometers work just fine. But, when you heat something up with microwave radiation,you are rotating water molecules. Translational motion is always self-limiting because a molecule can’t go very far before bumping into another molecule, but rotation is quite another thing. A molecule can rotate in place at speeds that translate to many times the boiling point, only no boiling occurs because there is no break in the surface tension. This is why if you heat up a clean glass of pure water in a microwave for a long time(say 5 min), it looks calm on the surface until you put something in it, and then it will explode with superheated steam and can cause burns (don’t do this!) The same high kinetic energy that causes that in pure water, will cause chemical reactions to occur in foods that generate carcinogens. In fact, one of the most recent applications of microwaves is in organic synthesis where reactions can take place that no amount of boiling could accomplish - reactions that create carcinogens intentionally. The entire microwave oven & microwavable food industry has been denying this in the same way that cigarette manufacturers argued that their products don’t cause cancer. Don’t microwave anything for more than about a minute. Beyond that you are creating carcinogens.



Submitted August 06, 2019 at 09:02PM by HiNoobHere https://ift.tt/2GSeyOm via TikTokTikk

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