I was curious about microwave ovens and how they work and in particular about the microwave radiation they emit and the halflife of this radiation. My layman's understanding is that microwave ovens use a 2.43GHZ emf to heat up water inside food items by attenuating 1 or more? of the few absorbtion bands that water has. What occurs right after the microwave is done cooking a food item and it turns off? Does the microwave radiation instantly dissipate, or become absorbed by the inside walls? Also, the microwave doors are fine meshes with holes roughly, from my estimation, perhaps 5 mm in diameter so my question is what is the largest diamter these mesh holes could be, whilst still stopping radiation leakage from the microwave. Conversely, what is the relationship between the containing the radiation and hole size? And what about the materials used to shield microwaves, do they use lead, copper, gold, other? And what about starting sentences with the word 'and'? Are average people allowed use such poetic license, or must you be a William Shakespeare or a William Faulkner?