Posted by: GP January 26, 2005
DO NOT HEAT LIQUIDS IN A MICROWAVE FOR MORE THAN 2 MINUTES
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I had already written this stuff (such possibility) in Sajha.com long time ago. (I believe). Similarly, don't put egg (uncooked) with "bokra" inside the microwave. It will result the same. Thats terrible. Why you should not do it? Microwave works by tuning the water molecules plus and minus charges upside down and doing this in cycles the molecules vibrate and internal energy of liquid molecules are increased. Microwave's heating mechanism is not supported by the convection type of heat transfer, as it usually happens when we heat water on kettle over electric heater. so, there is not rotation of hot and cold water inside microwave, because the heating was so fast that water molecules don't have enough time to follow convection mechanism and neither they can follow conduction method to transfer heat to get uniform temperature. Thus, the dT/dx (T=temperature, x is distance) is so high that the k (heat conduction coefficient is very very low almost like an insulator), thus dQ/dt = kA dT/dx (the rate of heat flow is too low) across the depth of water inside a cup or inside a unboiled egg. Thus, these molecules have extremely high heat while outer surface does not have, so these items are very very fragile for even a slight shaking or vibration, slight vibration creates a route so that dQ/dt becomes extremely high and it transfer like micro bomb. What is the solution? My own idea is to put some acrylik balls so that when they are also heated along with water then these balls will vibrate and moved up and down in such a way that heat can not accumulate at one place. The other solution might be to use flatter utensils (bowls) compared to deep cups. Deep cups are extremely dangerous, some time deadly. Unboiled egg should never be tested inside microwave. Remember microwave does not if it does not have liquid, especially water. It uses the mechanism as mentioned in first part of this posting. If you want to kill the RAAG ko Pyaj, you can microwave for 10-20 seconds, then it becomes kachai khana hune, use it in chatar matar. Similarly, if you want to eat Lasoon (Garlic) for some somach or for extra potassium intake, then you can kill the RAAG of lasoon by microwaving for 10-30 seconds depending on power of the microwave. It becomes excellent, no raag no worry. Use and don't misuse science "laws of physics". Thats it. GP
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